1 - Which of the following will give higher ratio of brickwork strength to mortar strength ?
1 - Which of the following will give higher ratio of brickwork strength to mortar strength ?
0.043159722222
2 - ______ is attached to the fixed cylindrical chamber which moves in the upward or downward direction.
2 - ______ is attached to the fixed cylindrical chamber which moves in the upward or downward direction.
Sliding Ram
3 - _______ aids in cushioning the shock of the hydraulic pressure during the working of the hydraulic ram
3 - _______ aids in cushioning the shock of the hydraulic pressure during the working of the hydraulic ram
Pressure vessel
4 - _______ restricts the crane from tipping
4 - _______ restricts the crane from tipping
Counterweights3
5 - ________ allows the rotation of the boom.
5 - ________ allows the rotation of the boom.
Rotex gear
6 - ________ helps in indicating the maximum lifting limit of the crane.
6 - ________ helps in indicating the maximum lifting limit of the crane.
Load moment indicator
7 - ________ invented the compressed air accumulator.
7 - ________ invented the compressed air accumulator.
Jean Mercier
8 - ________ is the simplest form of an accumulator.
8 - ________ is the simplest form of an accumulator.
air filled
9 - _________ is attached to the wall of the floor, where the sliding ram moves upwards or downwards depending on how the pressure is applied.
9 - _________ is attached to the wall of the floor, where the sliding ram moves upwards or downwards depending on how the pressure is applied.
Fixed cylinder
10 - ___________ is a circular wheel on which a series of smooth, radial curved vanes are fixed.
10 - ___________ is a circular wheel on which a series of smooth, radial curved vanes are fixed.
Runner
11 - ___________ restricts the dissolution of the pressurized air into the water.
11 - ___________ restricts the dissolution of the pressurized air into the water.
Elastic diaphragm
12 - ____________ consists of stationary circular wheel all around the runner of turbine
12 - ____________ consists of stationary circular wheel all around the runner of turbine
Guide mechanism
13 - ____________ is obtained by dividing total rate of flow through the turbine by rate of flow through single jet.
13 - ____________ is obtained by dividing total rate of flow through the turbine by rate of flow through single jet.
Number of jets
14 - _____________ allow the water to strike the vanes fixed on runner without shock at inlet
14 - _____________ allow the water to strike the vanes fixed on runner without shock at inlet
Guide vanes
15 - _____________ is defined as ratio between power delivered to runner and power supplied at inlet of turbine.
15 - _____________ is defined as ratio between power delivered to runner and power supplied at inlet of turbine.
Hydraulic efficiency
16 - _____________ is difference between head race and tail race
16 - _____________ is difference between head race and tail race
Gross head
17 - _____________ is ratio of volume of water actually striking the runner and volume of water supplied to turbine?
17 - _____________ is ratio of volume of water actually striking the runner and volume of water supplied to turbine?
Volumetric efficiency
18 - ______________ is a axial flow reaction turbines, if vanes are fixed to hub of turbine
18 - ______________ is a axial flow reaction turbines, if vanes are fixed to hub of turbine
Propeller turbine
19 - _______________is the electric power obtained from the energy of the water.
19 - _______________is the electric power obtained from the energy of the water.
Hydroelectric power
20 - ____________and __________of radial flow reaction turbine are always full of water.
20 - ____________and __________of radial flow reaction turbine are always full of water.
Casing and runner
21 - ____________governs the flow of water entering the runner blades.
21 - ____________governs the flow of water entering the runner blades.
Guide vanes
22 - ____________is an inward radial flow reaction turbine?
22 - ____________is an inward radial flow reaction turbine?
Francis turbine
23 - ___________is a pipe of gradually increasing area used for discharging water from exit of the turbine to the tail race
23 - ___________is a pipe of gradually increasing area used for discharging water from exit of the turbine to the tail race
Draft tube
24 - ‘Ht’ means _______
24 - ‘Ht’ means _______
Theory head pressure
25 - A ________ is a cyclic water pump that derives its power from hydroelectric sources.
25 - A ________ is a cyclic water pump that derives its power from hydroelectric sources.
Hydraulic Ram
26 - A ________ is a storage reservoir under pressure where a liquid is held under pressure.
26 - A ________ is a storage reservoir under pressure where a liquid is held under pressure.
Hydraulic accumulator
27 - A ________ is the main essence of a car crushing system.
27 - A ________ is the main essence of a car crushing system.
hydraulic press
28 - A __________ is a hydraulic machine for converting hydraulic power at low pressure into a reduced volume at higher pressure.
28 - A __________ is a hydraulic machine for converting hydraulic power at low pressure into a reduced volume at higher pressure.
Hydraulic Intensifier
29 - A body of dimensions 1.5 m x 1.0 m x 2 m weighs 3000 kg in water. Its specific gravity is
29 - A body of dimensions 1.5 m x 1.0 m x 2 m weighs 3000 kg in water. Its specific gravity is
1.1
30 - A closed cylindrical vessel of 100 cm diameter and 200 cm high is completely filled with a liquid (sp. weight 1600 kg/m3) when rotated about its vertical axis at 100 r.p.m. The total pressure on its lid, is
30 - A closed cylindrical vessel of 100 cm diameter and 200 cm high is completely filled with a liquid (sp. weight 1600 kg/m3) when rotated about its vertical axis at 100 r.p.m. The total pressure on its lid, is
954 kg
31 - A cylindrical vessel 40 cm high is revolved about its vertical axis so that the water touches the bottom when it just spills out. If the radius of the cylinder is 5 cm, the angular velocity of rotation, is
31 - A cylindrical vessel 40 cm high is revolved about its vertical axis so that the water touches the bottom when it just spills out. If the radius of the cylinder is 5 cm, the angular velocity of rotation, is
2 rad/sec
32 - A draft tube helps in converting kinetic energy into________
32 - A draft tube helps in converting kinetic energy into________
Mechanical work
33 - A floating body attains stable equilibrium if its metacentre is
33 - A floating body attains stable equilibrium if its metacentre is
above the centroid
34 - A floating body is said to be in a state of stable equilibrium_________________?
34 - A floating body is said to be in a state of stable equilibrium_________________?
when the metacentre is above the centre of gravity
35 - A fluid of kinematic viscosity 0.4 cm2/sec flows through a 8 cm diameter pipe. The maximum velocity for laminar flow will be__________________?
35 - A fluid of kinematic viscosity 0.4 cm2/sec flows through a 8 cm diameter pipe. The maximum velocity for laminar flow will be__________________?
1 m/sec
36 - A fluid particle may possess the displacement of
36 - A fluid particle may possess the displacement of
all the above.
37 - A gear pump uses ___________
37 - A gear pump uses ___________
Meshing of gears
38 - A gear pump uses ___________
38 - A gear pump uses ___________
Meshing of gears
39 - A hydraulic coupling belongs to the category of________
39 - A hydraulic coupling belongs to the category of________
Energy transfer machines
40 - A hydraulic press makes use of a _________
40 - A hydraulic press makes use of a _________
hydraulic cylinder
41 - A hydraulic ram uses the _______ effect to develop pressure.
41 - A hydraulic ram uses the _______ effect to develop pressure.
Water hammer
42 - A jet projected at an angle of 45θ, 40 m from the foot of a vertical column, just reaches the top of the column. The height of the column is
42 - A jet projected at an angle of 45θ, 40 m from the foot of a vertical column, just reaches the top of the column. The height of the column is
40 m
43 - A Kaplan turbine is used in ________
43 - A Kaplan turbine is used in ________
Turbomachinery
44 - A Kaplan turbine requires a speed ratio of 2. The available head of the turbine is 5 m. What should be the blade velocity of the turbine such that a speed ratio of 2 is maintained (take g = 10 m/s2)?
44 - A Kaplan turbine requires a speed ratio of 2. The available head of the turbine is 5 m. What should be the blade velocity of the turbine such that a speed ratio of 2 is maintained (take g = 10 m/s2)?
63.25 m/s
45 - A linear wheel turning motion is called as a ________
45 - A linear wheel turning motion is called as a ________
Rotation
46 - A multistage centrifugal pump produces a pressure of __________
46 - A multistage centrifugal pump produces a pressure of __________
21 MPa
47 - A multistage centrifugal pumps has more than two _______
47 - A multistage centrifugal pumps has more than two _______
Impellers
48 - A non-uniform steady flow is through
48 - A non-uniform steady flow is through
an expanding tube at constant rate
49 - A nozzle is fitted at the end of a pipe whose length is 320 m and diameter is 10 cm. If the value of f = 0.01, the diameter of the nozzle for the maximum transmission of power through the nozzle is
49 - A nozzle is fitted at the end of a pipe whose length is 320 m and diameter is 10 cm. If the value of f = 0.01, the diameter of the nozzle for the maximum transmission of power through the nozzle is
2.5 cm
50 - A piezometer opening in pipes measures
50 - A piezometer opening in pipes measures
static pressure
51 - A pitot tube is used to measure
51 - A pitot tube is used to measure
velocity of flow
52 - A pressure vessel is used to hold _______
52 - A pressure vessel is used to hold _______
Gases
53 - A pump that can evacuate air is called as _________
53 - A pump that can evacuate air is called as _________
Self priming pumps
54 - A pump that has low suction and moderate discharge is called _______
54 - A pump that has low suction and moderate discharge is called _______
Air lift pumps
55 - A pump that has low suction and moderate discharge of liquid is called ________
55 - A pump that has low suction and moderate discharge of liquid is called ________
Airlift Pump
56 - A quantity of fluid that leaks from a higher pressure discharge to a lower pressure discharge is called______
56 - A quantity of fluid that leaks from a higher pressure discharge to a lower pressure discharge is called______
Slip
57 - A reciprocating pump that has 1200 crank is _________
57 - A reciprocating pump that has 1200 crank is _________
Triple acting
58 - A rectangular block 2 m long, 1 m wide and 1 m deep floats in water, the depth of immersion being 0.5 m. If water weighs 10 kN/m3, then the weight of the block is________________?
58 - A rectangular block 2 m long, 1 m wide and 1 m deep floats in water, the depth of immersion being 0.5 m. If water weighs 10 kN/m3, then the weight of the block is________________?
lOkN
59 - A rectangular channel 6 m wide and 3 m deep and having a bed slope as 1 in 2000 is running full. If Chezy's constant C = 54.8, pick up the correct specification of the channel from the following :
59 - A rectangular channel 6 m wide and 3 m deep and having a bed slope as 1 in 2000 is running full. If Chezy's constant C = 54.8, pick up the correct specification of the channel from the following :
All the above.
60 - A repetitive variation about the central value of equilibrium is called ________
60 - A repetitive variation about the central value of equilibrium is called ________
Oscillation
61 - A right circular cylinder open at the top is filled with liquid and rotated about its vertical axis at such a speed that half the liquid spills out, then the pressure intensity at the center of bottom is___________________?
61 - A right circular cylinder open at the top is filled with liquid and rotated about its vertical axis at such a speed that half the liquid spills out, then the pressure intensity at the center of bottom is___________________?
zero
62 - A rise or fall of liquid in a glass tube of a very small diameter when dipped is
62 - A rise or fall of liquid in a glass tube of a very small diameter when dipped is
directly proportional to the specific weight of liquid
63 - A short tube mouthpiece will not run full at its outlet if the head under which the orifice works, is
63 - A short tube mouthpiece will not run full at its outlet if the head under which the orifice works, is
more than 12.2 m of the water
64 - A spherical load 900 kg is rolled through 9.8 m across the deck of a ship weighing 10, 000 kg. If the metacentric height of the ship is 5 metres, the angle of heel, is
64 - A spherical load 900 kg is rolled through 9.8 m across the deck of a ship weighing 10, 000 kg. If the metacentric height of the ship is 5 metres, the angle of heel, is
10° 15'
65 - A steady uniform flow is through
65 - A steady uniform flow is through
a long pipe at constant rate
66 - A stepped notch is a combination of
66 - A stepped notch is a combination of
rectangular notches of different sizes
67 - A student performs an experiment with a Francis turbine. He accidently set the RPM of Francis turbine to 1400 rpm instead of 700 rpm. He reported the power to be 1 MW. His teacher asks him to perform the same experiment using the correct RPM. The student
67 - A student performs an experiment with a Francis turbine. He accidently set the RPM of Francis turbine to 1400 rpm instead of 700 rpm. He reported the power to be 1 MW. His teacher asks him to perform the same experiment using the correct RPM. The student
1 MW
68 - A student reports the volumetric efficiency of a Kaplan turbine to be 95%. If he measures the volume flow rate through the turbine is 40 m3/s. What is the flow rate of water over the runner blades (in m3/s)?
68 - A student reports the volumetric efficiency of a Kaplan turbine to be 95%. If he measures the volume flow rate through the turbine is 40 m3/s. What is the flow rate of water over the runner blades (in m3/s)?
38
69 - A syphon is used
69 - A syphon is used
to connect water reservoirs at different levels intervened by a hill
70 - A tank that is used to protect closed water heating systems is called ________
70 - A tank that is used to protect closed water heating systems is called ________
Expansion vessel
71 - A triangular notch is preferred to a rectangular notch because
71 - A triangular notch is preferred to a rectangular notch because
all the above.
72 - A valve is suddenly closed in a water main in wl.ich the velocity is 1 m/sec and velocity of pressure wave is 981 m/ sec. The inertia head at the valve will be________________?
72 - A valve is suddenly closed in a water main in wl.ich the velocity is 1 m/sec and velocity of pressure wave is 981 m/ sec. The inertia head at the valve will be________________?
100m
73 - A vertical rectangular plane surface is submerged in water such that its top and bottom surfaces are 1.5 m and 6.0 m res-pectively below the free surface. The position of center of pressure below the free surface will be at a distance of________________?
73 - A vertical rectangular plane surface is submerged in water such that its top and bottom surfaces are 1.5 m and 6.0 m res-pectively below the free surface. The position of center of pressure below the free surface will be at a distance of________________?
4.2m
74 - A water tank partially filled with water is being carried on a truck moving with a constant horizontal acceleration. The level of the water
74 - A water tank partially filled with water is being carried on a truck moving with a constant horizontal acceleration. The level of the water
rises on the back side and falls on the front side
75 - Absolute exit velocity in a pump is denoted as ______
75 - Absolute exit velocity in a pump is denoted as ______
c2
76 - Air vessel accumulates excess quantity of ______
76 - Air vessel accumulates excess quantity of ______
Water
77 - Airlift pumps are widely used in aquaculture to pump.
77 - Airlift pumps are widely used in aquaculture to pump.
TRUE
78 - Airlift pumps are widely used in aquaculture to pump.
78 - Airlift pumps are widely used in aquaculture to pump.
TRUE
79 - All energy that is transferred from the fluid is derived from ________
79 - All energy that is transferred from the fluid is derived from ________
Mechanical energy
80 - All the characteristic curves are drawn with respect to __________
80 - All the characteristic curves are drawn with respect to __________
Unit speed
81 - Among the following which turbine has highest efficiency?
81 - Among the following which turbine has highest efficiency?
Kaplan turbine
82 - Among the following which turbine has least efficiency?
82 - Among the following which turbine has least efficiency?
Pelton turbine
83 - Among the following which turbine has least efficiency?
83 - Among the following which turbine has least efficiency?
Pelton turbine
84 - Among the following which turbine requires more head?
84 - Among the following which turbine requires more head?
Pelton Turbine
85 - An alternate option to the hydraulic ram is _________
85 - An alternate option to the hydraulic ram is _________
water-powered pump
86 - An error of 1% in measuring the head of water over the crest of a rectangular weir, produces an error in the discharge which is equal to
86 - An error of 1% in measuring the head of water over the crest of a rectangular weir, produces an error in the discharge which is equal to
0.015
87 - An example of reaction turbine is________
87 - An example of reaction turbine is________
Parsons turbine
88 - An ideal flow of a liquid obeys
88 - An ideal flow of a liquid obeys
Continuity equation
89 - An ideal fluid
89 - An ideal fluid
is frictionless and incompressible
90 - An ideal fluid is
90 - An ideal fluid is
compressible and non-viscous
91 - An ideal fluid is_______________?
91 - An ideal fluid is_______________?
frictionless and incompressible
92 - An independent mass of a fluid does not posses
92 - An independent mass of a fluid does not posses
pressure energy
93 - An open container filled with water is moved vertically downward with a uniform linear acceleration. The pressure at its bottom will be
93 - An open container filled with water is moved vertically downward with a uniform linear acceleration. The pressure at its bottom will be
lesser than static pressure
94 - An open container filled with water is moved vertically upward with a uniform linear acceleration. The pressure at its bottom will be
94 - An open container filled with water is moved vertically upward with a uniform linear acceleration. The pressure at its bottom will be
greater than static pressure
95 - An open cubical tank of 2 m side is filled with water. If the tank is rotated with an acceleration such that half of the water spills out, then the acceleration is equal to_______________?
95 - An open cubical tank of 2 m side is filled with water. If the tank is rotated with an acceleration such that half of the water spills out, then the acceleration is equal to_______________?
g
96 - An open tank contains 1 m deep water with 50 cm depth of oil of specific gravity 0.8 above it. The intensity of pressure at the bottom of tank will be________________?
96 - An open tank contains 1 m deep water with 50 cm depth of oil of specific gravity 0.8 above it. The intensity of pressure at the bottom of tank will be________________?
14 kN/m2
97 - An orifice is an opening in a vessel with
97 - An orifice is an opening in a vessel with
closed perimeter of regular shape through which water flows
98 - An orifice is called a large orifice if water head, is
98 - An orifice is called a large orifice if water head, is
five times the diameter of the orifice.
99 - An orifice is taken as large if
99 - An orifice is taken as large if
(H2 - H1) > H/3
100 - An up and down back and forth relative linear motion is called __________
100 - An up and down back and forth relative linear motion is called __________
Reciprocation
101 - As compared to a single free face, if a charge of explosive is placed equidistant from two faces, then the yield___________________?
101 - As compared to a single free face, if a charge of explosive is placed equidistant from two faces, then the yield___________________?
increases by 2.25 times
102 - Assertion A : English method of tunneling requires more time as compared to other methods of tunneling. Reason R : In English method of tunneling, the masons and excavators have to work alternately/
102 - Assertion A : English method of tunneling requires more time as compared to other methods of tunneling. Reason R : In English method of tunneling, the masons and excavators have to work alternately/
Both A and R are true and R is the correct explanation of A.
103 - At each stage the fluid is directed ________
103 - At each stage the fluid is directed ________
Towards the centre
104 - At each stage the fluid is directed ________
104 - At each stage the fluid is directed ________
Towards the centre
105 - At high pressure, the voids can generate ______
105 - At high pressure, the voids can generate ______
Shock waves
106 - At high pressure, the voids can generate ______
106 - At high pressure, the voids can generate ______
Shock waves
107 - At higher pressures, the impeller is connected in _______
107 - At higher pressures, the impeller is connected in _______
Series
108 - At present which is cheapest means of generating power_____________
108 - At present which is cheapest means of generating power_____________
Hydroelectric power
109 - Atmospheric pressure is equal to water column head of
109 - Atmospheric pressure is equal to water column head of
10.30 m
110 - Atmospheric pressure varies with
110 - Atmospheric pressure varies with
all of the above.
111 - Ay between two stream lines represents________________?
111 - Ay between two stream lines represents________________?
discharge
112 - Back water curve is caused if
112 - Back water curve is caused if
pressure is due to weir in the channel
113 - Barometres are used to measure
113 - Barometres are used to measure
atmospheric pressure
114 - Before reaching the turbine, the acceleration of the fluid takes place through the__________
114 - Before reaching the turbine, the acceleration of the fluid takes place through the__________
Nozzle
115 - Bernoulli's equation assumes that
115 - Bernoulli's equation assumes that
all the above.
116 - Bicycle pump generates more compression than volume displacement.
116 - Bicycle pump generates more compression than volume displacement.
TRUE
117 - Buckets and blades used in a turbine are used to:
117 - Buckets and blades used in a turbine are used to:
Alter the direction of water
118 - Calculate work done by jet per second on the runner where, discharge=0.7cubic meters/s, inlet and outlet whirl velocities be 23.77 and 2.94?
118 - Calculate work done by jet per second on the runner where, discharge=0.7cubic meters/s, inlet and outlet whirl velocities be 23.77 and 2.94?
187Kw
119 - Calculation of NPSH in a turbine is different from the calculation of NPSH in a pump.
119 - Calculation of NPSH in a turbine is different from the calculation of NPSH in a pump.
TRUE
120 - Capacity of a rotary pump is defined as _________
120 - Capacity of a rotary pump is defined as _________
Total liquid displaced
121 - Capillary rise of water is
121 - Capillary rise of water is
All of these.
122 - Cappoletti weir is a
122 - Cappoletti weir is a
trapezoidal weir, whose sides slope 1 horizontal to 2 verticals
123 - Cavitation in a draft tube occurs when _______
123 - Cavitation in a draft tube occurs when _______
Pressure drop
124 - Cavitation is caused by
124 - Cavitation is caused by
Low pressure
125 - Cavitation usually occurs due to the changes in ________
125 - Cavitation usually occurs due to the changes in ________
Pressure
126 - Centre of buoyancy always_________________?
126 - Centre of buoyancy always_________________?
coincides with the centroid of the volume of fluid displaced
127 - Centre of buoyancy is
127 - Centre of buoyancy is
centroid of the fluid displaced
128 - Centrifugal head in inward flow reaction turbine __________
128 - Centrifugal head in inward flow reaction turbine __________
Decreases
129 - Centrifugal head in Outward flow reaction turbine _____________
129 - Centrifugal head in Outward flow reaction turbine _____________
Increases
130 - Centrifugal pump impellers have speed ranging from ________
130 - Centrifugal pump impellers have speed ranging from ________
500- 10000
131 - Centrifugal pump is a_________
131 - Centrifugal pump is a_________
Turbomachinery
132 - Centrifugal pump is less efficient than a reciprocating pump because of its _______
132 - Centrifugal pump is less efficient than a reciprocating pump because of its _______
Cost
133 - Centrifugal pump works by imparting _______
133 - Centrifugal pump works by imparting _______
Kinetic energy
134 - Centrifugal pumps are a sub class of dynamic axisymmetric work absorbing turbomachinery.
134 - Centrifugal pumps are a sub class of dynamic axisymmetric work absorbing turbomachinery.
TRUE
135 - Centrifugal pumps are located ________ the level of source
135 - Centrifugal pumps are located ________ the level of source
Below
136 - Centrifugal pumps are used to transport ________
136 - Centrifugal pumps are used to transport ________
Fluid
137 - Centrifugal pumps are used to transport ________
137 - Centrifugal pumps are used to transport ________
Fluid
138 - Centrifugal pumps are used to transport ________
138 - Centrifugal pumps are used to transport ________
Fluid
139 - Centrifugal pumps are used to transport ________
139 - Centrifugal pumps are used to transport ________
Fluid
140 - Centrifugal pumps transfer energy from _______
140 - Centrifugal pumps transfer energy from _______
Rotor to fluid
141 - Centrifugal pumps transport fluids by converting _________
141 - Centrifugal pumps transport fluids by converting _________
Kinetic energy to hydrodynamic energy
142 - Centrifugal pumps with an internal suction stage are called as _________
142 - Centrifugal pumps with an internal suction stage are called as _________
Self priming pumps
143 - Centrifugal pumps work under the same principle, but differ in their _______
143 - Centrifugal pumps work under the same principle, but differ in their _______
Functions
144 - Change of angular momentum is equal to ________
144 - Change of angular momentum is equal to ________
Sum of external moments
145 - Chezy's formula is used to determine
145 - Chezy's formula is used to determine
velocity of flow in open channels
146 - Circular section of tunnels is not suitable for________________?
146 - Circular section of tunnels is not suitable for________________?
placement of concrete lining
147 - Coefficient of contraction for an external cylindrical mouthpiece is_________________?
147 - Coefficient of contraction for an external cylindrical mouthpiece is_________________?
1
148 - Coefficient of discharge for a totally submerged orifice as compared to that for an orifice discharging free is__________________?
148 - Coefficient of discharge for a totally submerged orifice as compared to that for an orifice discharging free is__________________?
slightly less
149 - Coefficient of velocity for Borda's mouth piece running full is________________?
149 - Coefficient of velocity for Borda's mouth piece running full is________________?
0.707
150 - Coefficient of velocity of venturimeter_________________?
150 - Coefficient of velocity of venturimeter_________________?
is equal to the coefficient of discharge of venturimeter
151 - Combination governing involves usage of two or more governing.
151 - Combination governing involves usage of two or more governing.
TRUE
152 - Combination governing involves usage of two or more governing.
152 - Combination governing involves usage of two or more governing.
TRUE
153 - Compounding is needed to ___________
153 - Compounding is needed to ___________
Increase efficiency
154 - Conical diffuser draft tube consists of conical diffuser with angles of______
154 - Conical diffuser draft tube consists of conical diffuser with angles of______
10 degrees
155 - Conical diffuser draft tube is also called_______
155 - Conical diffuser draft tube is also called_______
Straight divergent tube
156 - Conservation of angular momentum is described by _______
156 - Conservation of angular momentum is described by _______
Euler’s equation
157 - Consider an inward flow reaction turbine, here, water _______
157 - Consider an inward flow reaction turbine, here, water _______
Enters the wheel at the outer periphery and then flows towards the centre of the wheel
158 - Constant discharge takes place due to _______
158 - Constant discharge takes place due to _______
Unit speed
159 - Constant efficiency curves are plotted using _______
159 - Constant efficiency curves are plotted using _______
Constant speed and constant head
160 - Constant head curves are also called as _______
160 - Constant head curves are also called as _______
Main characteristic curves
161 - Constant head curves are also called as _______
161 - Constant head curves are also called as _______
Main characteristic curves
162 - Constant speed curve is denoted as _____
162 - Constant speed curve is denoted as _____
c
163 - Constant speed curves are ________
163 - Constant speed curves are ________
Vector quantities
164 - Constant speed curves are also called as _______
164 - Constant speed curves are also called as _______
Tail race curves
165 - Constant speed curves are determined by the _________
165 - Constant speed curves are determined by the _________
Heat
166 - Constant speed curves travel at constant speed when the value is equal to _______
166 - Constant speed curves travel at constant speed when the value is equal to _______
1
167 - Constant speed is measured _________
167 - Constant speed is measured _________
Mechanically
168 - Corrosion in the pump is developed due to _______
168 - Corrosion in the pump is developed due to _______
Fluid properties
169 - Corrosion in the pump is developed due to _______
169 - Corrosion in the pump is developed due to _______
Fluid properties
170 - Decreasing the diameter of the eye of the impeller, cavitation _________
170 - Decreasing the diameter of the eye of the impeller, cavitation _________
Increases
171 - Degree of reaction turbine is the ratio of?
171 - Degree of reaction turbine is the ratio of?
Pressure energy to total energy
172 - Degree of reactions are most commonly used in________
172 - Degree of reactions are most commonly used in________
Turbomachinery
173 - Design of Pelton wheel means the following data is to be determined.
173 - Design of Pelton wheel means the following data is to be determined.
All of the mentioned
174 - Different velocities in a centrifugal pump are determined by using ________
174 - Different velocities in a centrifugal pump are determined by using ________
Velocity triangle
175 - Differential manometers are used to measure
175 - Differential manometers are used to measure
difference in pressure at two points
176 - Discharge in inward flow reaction turbine ____________
176 - Discharge in inward flow reaction turbine ____________
Decreases
177 - Discharge in outward flow reaction turbine ____________
177 - Discharge in outward flow reaction turbine ____________
Increases
178 - Discharge over an ogee weir remains the same as that of
178 - Discharge over an ogee weir remains the same as that of
cippoletti weir
179 - Discharge through a reaction flow reaction turbine is given by, Q = ______
179 - Discharge through a reaction flow reaction turbine is given by, Q = ______
Pi*d*b*Vf1
180 - Discharge through a totally submerged orifice, is directly proportional to
180 - Discharge through a totally submerged orifice, is directly proportional to
square root of the difference in elevation of water surface
181 - Discharge through radial flow reaction turbine is ______________ ; Where, P1= perimeter of runner at inlet, P2= perimeter of runner at outlet, b= thickness and Vf= flow velocity
181 - Discharge through radial flow reaction turbine is ______________ ; Where, P1= perimeter of runner at inlet, P2= perimeter of runner at outlet, b= thickness and Vf= flow velocity
Both P1*b1*Vf1 & P2*b2*Vf2
182 - Draft tube allows turbine to be placed above the tail race.
182 - Draft tube allows turbine to be placed above the tail race.
TRUE
183 - Draft tube allows turbine to be placed below the tail race.
183 - Draft tube allows turbine to be placed below the tail race.
FALSE
184 - Draft tube consists of conical diffuser with angles of______
184 - Draft tube consists of conical diffuser with angles of______
10 deg
185 - Draft tube is also called_______
185 - Draft tube is also called_______
Straight divergent tube
186 - Draft tube operates at ______
186 - Draft tube operates at ______
Same efficiency
187 - Draft tubes are not used in which of the following turbines?
187 - Draft tubes are not used in which of the following turbines?
Pelton
188 - Draft tubes are situated at the outlet in____________
188 - Draft tubes are situated at the outlet in____________
Pelton
189 - Draft tubes have _________ shafts
189 - Draft tubes have _________ shafts
Vertical
190 - Drift method of tunnelling is used to construct tunnels in__________________?
190 - Drift method of tunnelling is used to construct tunnels in__________________?
rock
191 - Due to decrease of diameter of the droplet, inside pressure intensity
191 - Due to decrease of diameter of the droplet, inside pressure intensity
increases
192 - Due to each end contraction, the discharge of rectangular sharp crested weir is reduced by________________?
192 - Due to each end contraction, the discharge of rectangular sharp crested weir is reduced by________________?
0.05
193 - Due to its impeller action, centrifugal pumps can cover a wide range of fluid pump applications.
193 - Due to its impeller action, centrifugal pumps can cover a wide range of fluid pump applications.
TRUE
194 - Due to the arrangement of hydraulic jigger; the ________ rotates
194 - Due to the arrangement of hydraulic jigger; the ________ rotates
Pulley
195 - During normal working operation, the pump works like __________
195 - During normal working operation, the pump works like __________
Centrifugal pumps
196 - During the steam turbine governing, what remains a constant?
196 - During the steam turbine governing, what remains a constant?
Speed of rotation
197 - During the suction stroke the _______ moves left thus creating vacuum in the Cylinder.
197 - During the suction stroke the _______ moves left thus creating vacuum in the Cylinder.
Piston
198 - Efficiency of a draft tube gives __________
198 - Efficiency of a draft tube gives __________
Kinetic energy difference
199 - Efficiency of a draft tube is directly proportional to its __________
199 - Efficiency of a draft tube is directly proportional to its __________
Velocity
200 - Energy equation is usually applicable to
200 - Energy equation is usually applicable to
steady flow.
201 - Equation of continuity is based on the principle of conservation of_________________?
201 - Equation of continuity is based on the principle of conservation of_________________?
mass
202 - Equation of continuity of flow is based on the principle of conservation of
202 - Equation of continuity of flow is based on the principle of conservation of
mass
203 - Equation of continuity of fluids is applicable only if
203 - Equation of continuity of fluids is applicable only if
all the above.
204 - Euler developed the head pressure equation in centrifugal pumps.
204 - Euler developed the head pressure equation in centrifugal pumps.
TRUE
205 - Euler's equation for the motion of liquids assumes that
205 - Euler's equation for the motion of liquids assumes that
fluid is homogeneous and incompressible
206 - Falling drops of water become spheres due to
206 - Falling drops of water become spheres due to
surface tension
207 - Find the diameter of jet D, if jet ratio m and diameter of jet d are given as 10 and 125mm.
207 - Find the diameter of jet D, if jet ratio m and diameter of jet d are given as 10 and 125mm.
1.25 meters
208 - Flow in pipes is laminar if Reynold number is
208 - Flow in pipes is laminar if Reynold number is
less than 2100
209 - Flow in pipes is turbulent if Reynold number is
209 - Flow in pipes is turbulent if Reynold number is
more than 3000
210 - Flow net can be drawn only if the flow is
210 - Flow net can be drawn only if the flow is
distortion
211 - Flow of water in pipes of diameter more than 3 metres, can be measured by
211 - Flow of water in pipes of diameter more than 3 metres, can be measured by
rotameter.
212 - Flow ratio is defined as Vf1/(2gH)^1/2
212 - Flow ratio is defined as Vf1/(2gH)^1/2
FALSE
213 - Fluids change the volume under external presssure due to
213 - Fluids change the volume under external presssure due to
compressibility
214 - For a good condition, slip should be________
214 - For a good condition, slip should be________
Below 1 percent
215 - For a Kaplan turbine, the whirl velocity at inlet of the turbine is given to be 18 m/s. The blade velocity is given as 25 m/s. What is the hydraulic efficiency for a head of 50 m. Take g = 10 m/s2?
215 - For a Kaplan turbine, the whirl velocity at inlet of the turbine is given to be 18 m/s. The blade velocity is given as 25 m/s. What is the hydraulic efficiency for a head of 50 m. Take g = 10 m/s2?
0.9
216 - For a long pipe, the head loss
216 - For a long pipe, the head loss
at the entrance and outlet both are ignored
217 - For a most economical rectangular channel, the hydraulic mean depth, is equal to
217 - For a most economical rectangular channel, the hydraulic mean depth, is equal to
half the depth of flow
218 - For a most economical rectangular channel, the width of the channel must be
218 - For a most economical rectangular channel, the width of the channel must be
twice the depth of flow
219 - For a most economical trapezoidal open channel, the half of the top width must be equal to
219 - For a most economical trapezoidal open channel, the half of the top width must be equal to
one sloping side
220 - For a sphere of radius 15 cm moving with a uniform velocity of 2 m/sec through a liquid of specific gravity 0.9 and dynamic viscosity 0.8 poise, the Reynolds number will be_________________?
220 - For a sphere of radius 15 cm moving with a uniform velocity of 2 m/sec through a liquid of specific gravity 0.9 and dynamic viscosity 0.8 poise, the Reynolds number will be_________________?
675
221 - For an actual reaction turbine, what should be the angle beta, such that the loss of kinetic energy at the outlet is to be minimum?
221 - For an actual reaction turbine, what should be the angle beta, such that the loss of kinetic energy at the outlet is to be minimum?
90
222 - For an oil field to have solid control, it needs _______
222 - For an oil field to have solid control, it needs _______
Centrifugal pumps
223 - For critical depth of flow of water in open channels, fc the specific energy must be :
223 - For critical depth of flow of water in open channels, fc the specific energy must be :
minimum
224 - For critical flow, the Froude number is :
224 - For critical flow, the Froude number is :
1
225 - For earthquake resistant masonry buildings, the vertical distance between openings one above the other in a load bearing wall shall not be less than_________________?
225 - For earthquake resistant masonry buildings, the vertical distance between openings one above the other in a load bearing wall shall not be less than_________________?
60 cm
226 - For exerting a pressure of 4.8 kg/cm2, the depth of oil (specific gravity 0.8), should be
226 - For exerting a pressure of 4.8 kg/cm2, the depth of oil (specific gravity 0.8), should be
60 cm
227 - For hydro-dynamically smooth boundary, the friction coefficient for turbulent flow is_______________?
227 - For hydro-dynamically smooth boundary, the friction coefficient for turbulent flow is_______________?
dependent only on Reynolds number
228 - For laminar flow in a pipe of circular cross-section, the Darcy's friction factor f is________________?
228 - For laminar flow in a pipe of circular cross-section, the Darcy's friction factor f is________________?
inversely proportional to Reynolds number and indpendent of pipe wall roughness
229 - For maximum horse power of a nozzle, the head supplied must be equal to
229 - For maximum horse power of a nozzle, the head supplied must be equal to
thrice the head loss in the pipe due to friction
230 - For most economical rectangular section of a channel, the depth is kept
230 - For most economical rectangular section of a channel, the depth is kept
half the width
231 - For mountaneous regions having steep slope, wagons for carrying liquid are made with bottom
231 - For mountaneous regions having steep slope, wagons for carrying liquid are made with bottom
parallel to the horizontal surface
232 - For solving network problems of pipes, necessary condition is
232 - For solving network problems of pipes, necessary condition is
all the above.
233 - For solving the problems is hydraulic engineering, the velocity used is
233 - For solving the problems is hydraulic engineering, the velocity used is
average velocity of flow over a section
234 - For steady flow in open channels, which one of the following does not change :
234 - For steady flow in open channels, which one of the following does not change :
All of these.
235 - For the flow of liquid from an open ended tube (or nozzle) leading to the formation of spray of liquid drops, the number generally applied, is
235 - For the flow of liquid from an open ended tube (or nozzle) leading to the formation of spray of liquid drops, the number generally applied, is
Weber number
236 - For the most economical trapezoidal open channel,
236 - For the most economical trapezoidal open channel,
All of these.
237 - For the two dimensional flow, the stream function is given by ψ = 2xy. The velocity at a point (3, 4) is
237 - For the two dimensional flow, the stream function is given by ψ = 2xy. The velocity at a point (3, 4) is
10 m/sec
238 - For uniform flow in canals
238 - For uniform flow in canals
all the above.
239 - For which of the following values of available heads may Kaplan turbine be used?
239 - For which of the following values of available heads may Kaplan turbine be used?
50 m
240 - Formation of bubbles in an impeller is called ______
240 - Formation of bubbles in an impeller is called ______
Cavities
241 - Francis and Kaplan turbines are known as _______
241 - Francis and Kaplan turbines are known as _______
Reaction turbine
242 - Francis turbine is typically used for which of the following values of available heads?
242 - Francis turbine is typically used for which of the following values of available heads?
100 m
243 - Frictional loss of head includes the loss of energy due to
243 - Frictional loss of head includes the loss of energy due to
none of these.
244 - From a nozzle exposed to atmosphere, the liquid jet traverses
244 - From a nozzle exposed to atmosphere, the liquid jet traverses
a parabolic path.
245 - Froth contains air that blocks the pumps.
245 - Froth contains air that blocks the pumps.
TRUE
246 - Gauge pressure is
246 - Gauge pressure is
absolute pressure - atmospheric pressure
247 - Gauge pressure of the draft tube is denoted by _____
247 - Gauge pressure of the draft tube is denoted by _____
P
248 - Gear pumps are ___________
248 - Gear pumps are ___________
Tangential flow pumps
249 - Gear pumps are mainly used in chemical installations because they pump ________
249 - Gear pumps are mainly used in chemical installations because they pump ________
High viscosity fluids
250 - Gear pumps are used to transport ________
250 - Gear pumps are used to transport ________
Fluid
251 - Gear pumps convert rotational kinetic energy to hydrodynamic energy.
251 - Gear pumps convert rotational kinetic energy to hydrodynamic energy.
TRUE
252 - Head lost due to friction is given by k*f*L*v*v/D*2g where f- friction coefficient, L- length of pen stock, D- diameter of penstock and” k” is constant and its value is ____________
252 - Head lost due to friction is given by k*f*L*v*v/D*2g where f- friction coefficient, L- length of pen stock, D- diameter of penstock and” k” is constant and its value is ____________
4
253 - Head under which Francis turbine is operated
253 - Head under which Francis turbine is operated
40 -600 meters
254 - Head under which Kaplan turbine is operated______
254 - Head under which Kaplan turbine is operated______
10-70 meters
255 - Height of the draft tube is denoted by _____
255 - Height of the draft tube is denoted by _____
z
256 - High head, low head and medium head turbines are classified based on
256 - High head, low head and medium head turbines are classified based on
Head at inlet of turbine
257 - High pressure reciprocating pumps are generally from 1500 HP.
257 - High pressure reciprocating pumps are generally from 1500 HP.
TRUE
258 - High specific speed of turbine implies that it is___________
258 - High specific speed of turbine implies that it is___________
Kaplan turbine
259 - Hot wire anemometer is used to measure_______________?
259 - Hot wire anemometer is used to measure_______________?
velocity of gas
260 - How do we plot points in a curve?
260 - How do we plot points in a curve?
Analytical approach
261 - How does the flow ratio (ψ) of a Francis turbine vary with available head (H)?
261 - How does the flow ratio (ψ) of a Francis turbine vary with available head (H)?
ψ α 1/(sqrt (H))
262 - How is the construction of the vessel tested?
262 - How is the construction of the vessel tested?
Non-destructive testing
263 - How many impellers does a multistage centrifugal pump have?
263 - How many impellers does a multistage centrifugal pump have?
Two and more
264 - How many number of valves are required for the rotary pump?
264 - How many number of valves are required for the rotary pump?
0
265 - How many number of valves are required for the rotary pump?
265 - How many number of valves are required for the rotary pump?
0
266 - How many types of Reaction turbines are there?
266 - How many types of Reaction turbines are there?
5
267 - How many types of turbines can you classify on the basis of direction of flow through runner?
267 - How many types of turbines can you classify on the basis of direction of flow through runner?
4
268 - Hydraulic coefficient of an orifice means the coefficient of
268 - Hydraulic coefficient of an orifice means the coefficient of
all the above.
269 - Hydraulic energy is converted into another form of energy by hydraulic machines. What form of energy is that?
269 - Hydraulic energy is converted into another form of energy by hydraulic machines. What form of energy is that?
Mechanical Energy
270 - Hydraulic grade line
270 - Hydraulic grade line
may be above or below the centre line of conduit.
271 - Hydraulic head is also called as _________
271 - Hydraulic head is also called as _________
Piezometric head
272 - Hydraulic Machines fall under the category :
272 - Hydraulic Machines fall under the category :
Roto-dynamic machinery
273 - Hydraulic radius is equal to
273 - Hydraulic radius is equal to
area divided by wetted perimeter
274 - Hydraulic ram is a device
274 - Hydraulic ram is a device
for lifting water without an electric motor
275 - Hydraulic Ram is used in areas where there is a source of ________ power.
275 - Hydraulic Ram is used in areas where there is a source of ________ power.
Hydroelectric
276 - Hydraulic turbines are classified based on ____________
276 - Hydraulic turbines are classified based on ____________
Energy available, Direction of flow, Head at inlet.
277 - Hydrodynamic cavitation is due to the process of _________
277 - Hydrodynamic cavitation is due to the process of _________
Vaporisation
278 - Hydrostatic pressure on a dam depends upon its
278 - Hydrostatic pressure on a dam depends upon its
both (b) and (c).
279 - Idle period of lift is defined as the difference of the total time taken for one operation and the _____ of the lift.
279 - Idle period of lift is defined as the difference of the total time taken for one operation and the _____ of the lift.
Working period
280 - If a sphere of diameter 1 cm falls in castor oil of kinematic viscosity 10 stokes, with a terminal velocity of 1.5 cm/sec, the coefficient of drag on the sphere is________________?
280 - If a sphere of diameter 1 cm falls in castor oil of kinematic viscosity 10 stokes, with a terminal velocity of 1.5 cm/sec, the coefficient of drag on the sphere is________________?
160
281 - If a vessel containing liquid moves downward with a constant acceleration equal to 'g' then_____________?
281 - If a vessel containing liquid moves downward with a constant acceleration equal to 'g' then_____________?
the pressure throughout the liquid mass is atmospheric
282 - If cohesion between the molecules of a fluid is more than adhesion between the fluid and glass, the free level of fluid in a dipped glass tube will be
282 - If cohesion between the molecules of a fluid is more than adhesion between the fluid and glass, the free level of fluid in a dipped glass tube will be
lower than the surface of liquid
283 - If Cv, Cc, Cd and Cr are the hydraulic coefficients of an orifice, then
283 - If Cv, Cc, Cd and Cr are the hydraulic coefficients of an orifice, then
Cd = Cc . Cv
284 - If 'D' is the diameter of tunnel in meters, then the thickness of lining in mm, as per the empirical formula is given by_________________?
284 - If 'D' is the diameter of tunnel in meters, then the thickness of lining in mm, as per the empirical formula is given by_________________?
82 D
285 - If diameter of jet is 85mm and diameter of runner is 1.5 meter then calculate number of buckets on Pelton wheel approximately
285 - If diameter of jet is 85mm and diameter of runner is 1.5 meter then calculate number of buckets on Pelton wheel approximately
25
286 - If diameter of jet is 85mm and diameter of runner is 1.5 meter then calculate width of buckets.
286 - If diameter of jet is 85mm and diameter of runner is 1.5 meter then calculate width of buckets.
425mm
287 - If diameter of jet is 85mm and diameter of runner is 1.5 meter then depth of buckets is ___________
287 - If diameter of jet is 85mm and diameter of runner is 1.5 meter then depth of buckets is ___________
102mm
288 - If energy available at inlet of turbine is only kinetic energy then it is classified based on
288 - If energy available at inlet of turbine is only kinetic energy then it is classified based on
Type of energy at inlet
289 - If H is height of the liquid above the sill, the effect of end contractions, according to Francis formula, is
289 - If H is height of the liquid above the sill, the effect of end contractions, according to Francis formula, is
0.1 H
290 - If jet of water coming out from a nozzle with a velocity 9.81 m/s, the angle of elevation being 30°, the time to reach the highest point is
290 - If jet of water coming out from a nozzle with a velocity 9.81 m/s, the angle of elevation being 30°, the time to reach the highest point is
0.50 s
291 - If 'N' is the number of shafts used, then the total number of feces available for attacking the excavation and construction in tunnels are_________________________?
291 - If 'N' is the number of shafts used, then the total number of feces available for attacking the excavation and construction in tunnels are_________________________?
2 N + 2
292 - If the atmospheric pressure on the surface of an oil tank (sp. gr. 0.8) is 0.1 kg/cm2, the pressure at a depth of 2.5 m, is
292 - If the atmospheric pressure on the surface of an oil tank (sp. gr. 0.8) is 0.1 kg/cm2, the pressure at a depth of 2.5 m, is
3 metres of water
293 - If the cylinder is filled with fuel or air it is said to be ___________
293 - If the cylinder is filled with fuel or air it is said to be ___________
100% efficient
294 - If the diameters of the two pistons used in the arrangement are different, the _______ in each cylinder will vary.
294 - If the diameters of the two pistons used in the arrangement are different, the _______ in each cylinder will vary.
Hydraulic pressure
295 - If the dynamic viscosity of a fluid is 0.5 poise and specific gravity is 0.5, then the kinematic viscosity of that fluid in stokes is__________________?
295 - If the dynamic viscosity of a fluid is 0.5 poise and specific gravity is 0.5, then the kinematic viscosity of that fluid in stokes is__________________?
1
296 - If the forces are due to inertia and gravity, and frictional resistance plays only a minor role, the design of the channels is made by comparing
296 - If the forces are due to inertia and gravity, and frictional resistance plays only a minor role, the design of the channels is made by comparing
Froude number
297 - If the Mach number for a fluid flow is less than 1, the flow is
297 - If the Mach number for a fluid flow is less than 1, the flow is
sub-sonic
298 - If the pressure at the inlet of a pipe is 90 kg/cm2 and pressure drop over the pipe line is 10 kg/cm2, the efficiency of transmission, is
298 - If the pressure at the inlet of a pipe is 90 kg/cm2 and pressure drop over the pipe line is 10 kg/cm2, the efficiency of transmission, is
88.8%.
299 - If the slip is above 5 percent, the pumps needs to be ______
299 - If the slip is above 5 percent, the pumps needs to be ______
Overhauled
300 - If the total head of the nozzle of a pipe is 37.5 m and discharge is 1 cumec, the power generated is
300 - If the total head of the nozzle of a pipe is 37.5 m and discharge is 1 cumec, the power generated is
500 H.P.
301 - If the velocity is zero over half of the cross-sectional area and is uniform over the remaining half, then the momentum correction factor is_______________?
301 - If the velocity is zero over half of the cross-sectional area and is uniform over the remaining half, then the momentum correction factor is_______________?
2
302 - If the volume of a liquid weighing 3000 kg is 4 cubic metres, 0.75 is its
302 - If the volume of a liquid weighing 3000 kg is 4 cubic metres, 0.75 is its
specific gravity
303 - If the water flows from inwards to outwards, the turbine is known as _____________
303 - If the water flows from inwards to outwards, the turbine is known as _____________
Outward flow turbine
304 - If the weight of a body immersed in a fluid exceeds the buoyant force, then the body will________________?
304 - If the weight of a body immersed in a fluid exceeds the buoyant force, then the body will________________?
tend to move downward and it may finally sink
305 - If velocities of fluid particles vary from point to point in magnitude and direction, as well as from instant to instant, the flow is said to be
305 - If velocities of fluid particles vary from point to point in magnitude and direction, as well as from instant to instant, the flow is said to be
turbulent flow
306 - If velocity is zero over l/3rd of a cross-section and is uniform over remaining 2/3rd of the cross-section, then the correction factor for kinetic energy is__________________?
306 - If velocity is zero over l/3rd of a cross-section and is uniform over remaining 2/3rd of the cross-section, then the correction factor for kinetic energy is__________________?
45173
307 - If water flows in radial direction at inlet of runner and leaves axially at outlet then turbine is named as
307 - If water flows in radial direction at inlet of runner and leaves axially at outlet then turbine is named as
Mixed flow turbine
308 - If we lower the temperature, the water pump cavitation ________
308 - If we lower the temperature, the water pump cavitation ________
Decreases
309 - If we raise the liquid level in the suction vessel, cavitation ______
309 - If we raise the liquid level in the suction vessel, cavitation ______
Decreases
310 - If we reduce the motor rpm in an impeller, cavitation _______
310 - If we reduce the motor rpm in an impeller, cavitation _______
Decreases
311 - If we use an impeller inducer, we can reduce the cavitation in a centrifugal pump.
311 - If we use an impeller inducer, we can reduce the cavitation in a centrifugal pump.
TRUE
312 - If we use two lower capacity pumps in parallel, cavitation ________
312 - If we use two lower capacity pumps in parallel, cavitation ________
Decreases
313 - If x is the distance from leading edge, then the boundary layer thickness in laminar flow varies as________________?
313 - If x is the distance from leading edge, then the boundary layer thickness in laminar flow varies as________________?
x
314 - Impeller in a motor is used to _________
314 - Impeller in a motor is used to _________
Change Pressure
315 - Imperial units is defined as _________
315 - Imperial units is defined as _________
Revolutions per minute
316 - Impulse turbine and reaction turbine are classified based on ?
316 - Impulse turbine and reaction turbine are classified based on ?
Type of energy at inlet
317 - Impulse turbine is generally fitted at ______________
317 - Impulse turbine is generally fitted at ______________
Above the tail race
318 - In a cavity wall, both leaves of which are load bearing, the effective thickness is taken as________________?
318 - In a cavity wall, both leaves of which are load bearing, the effective thickness is taken as________________?
larger of (B) and (C)
319 - In a centrifugual pump casing, the flow of water leaving the impeller, is
319 - In a centrifugual pump casing, the flow of water leaving the impeller, is
free vortex motion
320 - In a double acting reciprocating pump, the piston carries suction and expulsion at the same time.
320 - In a double acting reciprocating pump, the piston carries suction and expulsion at the same time.
TRUE
321 - In a fluid flow a particle may posses
321 - In a fluid flow a particle may posses
all the above.
322 - In a forced vortex motion, the velocity of flow is________________?
322 - In a forced vortex motion, the velocity of flow is________________?
directly proportional to its radial distance from axis of rotation
323 - In a hydraulic crane, _____ is the component mainly responsible for lifting.
323 - In a hydraulic crane, _____ is the component mainly responsible for lifting.
Boom
324 - In a hydraulic lift ______ is fixed on the crown of the sliding ram where the carried load is located.
324 - In a hydraulic lift ______ is fixed on the crown of the sliding ram where the carried load is located.
Cage
325 - In a hydraulic press, the metal can be _______
325 - In a hydraulic press, the metal can be _______
Crushes, straightened and molded
326 - In a hydraulic press, the pump acts as a _________
326 - In a hydraulic press, the pump acts as a _________
Piston
327 - In a hydraulic system the development of pressure is by variable displacement pump and _____
327 - In a hydraulic system the development of pressure is by variable displacement pump and _____
gear pump
328 - In a Kaplan turbine experiment, the volumetric efficiency of a given turbine is 91%. If volume flow rate of water in given to be 35 m3/s, find the volume of water (m3) NOT flowing over the runner blades per second?
328 - In a Kaplan turbine experiment, the volumetric efficiency of a given turbine is 91%. If volume flow rate of water in given to be 35 m3/s, find the volume of water (m3) NOT flowing over the runner blades per second?
3.15
329 - In a Kaplan Turbine experimental setup, the power output of the shaft is 4.325 MW. The volume flow rate of water in 15 m3/s at an available head of 50 m. Find the overall efficiency of the turbine in % (g = 10 m/s2)?
329 - In a Kaplan Turbine experimental setup, the power output of the shaft is 4.325 MW. The volume flow rate of water in 15 m3/s at an available head of 50 m. Find the overall efficiency of the turbine in % (g = 10 m/s2)?
57.66
330 - In a Kaplan turbine, what is the direction of water flow?
330 - In a Kaplan turbine, what is the direction of water flow?
Axial and then axial
331 - In a positive displacement pump, what gets displaced?
331 - In a positive displacement pump, what gets displaced?
Volume
332 - In a reaction turbine, the draft tube is used to _________
332 - In a reaction turbine, the draft tube is used to _________
To increase the head of water by an amount that is equal to the height of the runner outlet above the tail race
333 - In a reciprocating pump, with the change in discharge pressure, ________
333 - In a reciprocating pump, with the change in discharge pressure, ________
Volume delivered remains the same
334 - In a short cylindercial external mouthpiece, the venacontracta occurs at a distance from the outlet of orifice equal to
334 - In a short cylindercial external mouthpiece, the venacontracta occurs at a distance from the outlet of orifice equal to
one-fourth the diameter of the orifice
335 - In a Sutro weir, the discharge is proportional to________________?
335 - In a Sutro weir, the discharge is proportional to________________?
H
336 - In a two dimensional flow if the components of the velocity are u = ax ; v = by, the point where no motion occurs, is known as
336 - In a two dimensional flow if the components of the velocity are u = ax ; v = by, the point where no motion occurs, is known as
stagnation point
337 - In a two dimensional incompressible steady flow around an airfoil, the stream lines are 2 cm apart at a great distance from the airfoil, where the velocity is 30 m/sec. The velocity near the airfoil, where the stream lines are 1.5 cm apart, is____________
337 - In a two dimensional incompressible steady flow around an airfoil, the stream lines are 2 cm apart at a great distance from the airfoil, where the velocity is 30 m/sec. The velocity near the airfoil, where the stream lines are 1.5 cm apart, is____________
40 m/sec
338 - In a venturimeter, the divergent cone is kept
338 - In a venturimeter, the divergent cone is kept
longer than convergent cone
339 - In all the characteristic curves, the overall efficiency is aimed at the maximum value.
339 - In all the characteristic curves, the overall efficiency is aimed at the maximum value.
TRUE
340 - In an inclined pipe, the pressure difference at its two ends is due to
340 - In an inclined pipe, the pressure difference at its two ends is due to
all the above.
341 - In an inclined position, a venturimeter records
341 - In an inclined position, a venturimeter records
same reading
342 - In an open tube, free surface of mercury remains
342 - In an open tube, free surface of mercury remains
curved downwards
343 - In an outward flow reaction turbine the discharge _______
343 - In an outward flow reaction turbine the discharge _______
Increases
344 - In analytical approach, dp= __________
344 - In analytical approach, dp= __________
vdt
345 - In Belgium method of tunneling _________________?
345 - In Belgium method of tunneling _________________?
construction of roof arch is completed before side walls and invert are built
346 - In C.G.S. system the unit of visocity is
346 - In C.G.S. system the unit of visocity is
poise
347 - In C.G.S. system the units of kinematic viscosity, is
347 - In C.G.S. system the units of kinematic viscosity, is
stoke
348 - In case of a Medium runner, tan (α1) CANNOT be given by (α1 = Guide vane angle at inlet)?
348 - In case of a Medium runner, tan (α1) CANNOT be given by (α1 = Guide vane angle at inlet)?
Vw1 / u1
349 - In case of an airfoil, the separation of flow occurs________________?
349 - In case of an airfoil, the separation of flow occurs________________?
at the extreme rear of body
350 - In case of gas turbines and compressors, degree of reaction is ________
350 - In case of gas turbines and compressors, degree of reaction is ________
Isentropic enthalpy drop in rotor/ isentropic enthalpy drop in stage
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