A
B
C
D

A 40%
B 50%
C 60%
D 80%

# Q3: Which of the following turbine is preferred for 0 to 25 m head of water?

A Pelton wheel
B Kaplan turbine
C Francis turbine
D none of these

A 10° to 15°
B 15° to 20°
C 20° to 25°
D 25° to 30°

# Q5: Work done by a turbine __________ upon the weight of water flowing per second.

A depends
B does not depend

# Q6: Which of the following pump is preferred for flood control and irrigation applications?

A Centrifugal pump
B Axial flow pump
C Mixed flow pump
D Reciprocating pump

A Correct
B Incorrect

A True
B False

# Q9: The power produced by the reaction turbine is __________ to the head of water.

A directly proportional
B inversely proportional

# Q10: In a reaction turbine, the draft tube is used

A to run the turbine full
B to prevent air to enter the turbine
C to increase the head of water by an amount equal to the height of the runner outlet above the tail race
D to transport water to downstream

# Q11: The ratio of quantity of liquid discharged per second from the pump to the quantity of liquid passing per second through the impeller is known as

A manometric efficiency
B mechanical efficiency
C overall efficiency
D volumetric efficiency

A weight
B impulse

# Q13: Manometric head, in case of a centrifugal pump, is equal to

A Suction lift + Loss of head in suction pipe due to friction + Delivery lift + Loss of head in delivery pipe due to friction + Velocity head in the delivery pipe
B Workdone per kN of water - Losses within the impeller
C Energy per kN at outlet of impeller - Energy per kN at inlet of impeller
D all of the above

A H = Hg/hf
B H = Hg x hf
C H = Hg + hf
D H = Hg - hf

# Q15: The mechanical efficiency of an impulse turbine is

A ratio of the actual power produced by the turbine to the energy actually supplied by the turbine
B ratio of the actual work available at the turbine to the energy imparted to the wheel
C ratio of the Work done on the wheel to the energy of the jet
D none of the above

A product
B difference
C sum

# Q17: Power required to drive a centrifugal pump is directly proportional to __________ of its impeller.

A diameter
B square of diameter
C cube of diameter
D fourth power of diameter

A
B
C
D

A remains same
B increases
C decreases

A wQHs
B wQHd
C wQ(Hs - Hd)
D wQ(Hs + Hd)

A 0 to 25 m
B 25 m to 250 m
C above 250 m
D none of these

A hydraulic
B mechanical
C overall

A two
B four
C six
D eight

# Q24: Geometric similarity is said to exist between the model and the prototype, if both of them

A have identical velocities
B are equal in size and shape
C are identical in shape, but differ only in size
D have identical forces

A Agree
B Disagree

A Yes
B No

A 0.25 kW
B 0.75 kW
C 1.75 kW
D 3.75 kW

A
B
C
D

# Q29: Multi-stage centrifugal pumps are used to

A give high discharge
C pump viscous fluids
D all of these

# Q30: A hydraulic coupling belongs to the category of

A power absorbing machines
B power developing machines
C energy transfer machines
D energy generating machines

A True
B False

A True
B False

# Q33: The specific speed from 160 to 500 r.p.m. of a centrifugal pump indicates that the pump is

A slow speed with radial flow at outlet
B medium speed with radial flow at outlet
C high speed with radial flow at outlet
D high speed with axial flow at outlet

A increases
B decreases

A Q = π.D.Vf
B Q = π.b.Vf
C Q = π.D.b.Vf
D Q = D.b.Vf

# Q36: Discharge of a centrifugal pump is (where N = Speed of the pump impeller)

A directly proportional to N
B inversely proportional to N
C directly proportional to N2
D inversely proportional to N2

A Agree
B Disagree

# Q38: The overall efficiency of a reaction turbine is the ratio of

A power produced by the turbine to the energy actually supplied by the turbine
B actual work available at the turbine to the energy imparted to the wheel
C workdone on the wheel to the energy (or head of water) actually supplied to the turbine
D none of the above

A Yes
B No

A Yes
B No

A 24.8 r.p.m.
B 48.2 r.p.m
C 82.4 r.p.m.
D 248 r.p.m

A True
B False

A L.A.N
BL.A.N
C
D

# Q45: Slip of a reciprocating pump is defined as the

A ratio of actual discharge to the theoretical discharge
B sum of actual discharge and the theoretical discharge
C difference of theoretical discharge and the actual discharge
D product of theoretical discharge and the actual discharge

# Q46: The speed of a turbine runner is

A directly proportional to H1/2
B inversely proportional to H1/2
C directly proportional to H3/2
D inversely proportional to H3/2

A True
B False

A 10° to 15°
B 15° to 20°
C 20° to 25°
D 25° to 30°

A 2 to 4
B 4 to 8
C 8 to l6
D 16 to 24

A normal speed
B unit speed
C specific speed
D none of these

# Q51: Discharge of a centrifugal pump is

A directly proportional to diameter of its impeller
B inversely proportional to diameter of its impeller
C directly proportional to (diameter)2 of its impeller
D inversely proportional to (diameter)2 of its impeller

## For help Students Orientation Mcqs Questions

One stop destination for examination, preparation, recruitment, and more. Specially designed online test to solve all your preparation worries. Go wherever you want to and practice whenever you want, using the online test platform.