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Engineering
Mechanical
ME Set-1
Hydraulic Machines
33

Hydraulic Machines MCQ with Answers

33) The efficiency of a Pelton wheel working under constant head ______ with the increase in power.

remains same

increases

decreases

none of the above

Answer is:

increases

Hydraulic Machines MCQ with Answers

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Related Hydraulic Machines MCQ with Answers

34) The discharge through a reaction turbine ____ with the increase in unit speed

remains same

increases

decreases

none of the above

Answer is:

decreases

35) The efficiency of a reaction turbine for a given head _____ with the increase in speed.

Decreases

Increases

remains same

None of the above

Answer is:

Decreases

36) The cavitation in a hydraulic machine is mainly due to

low velocity

high velocity

low pressure

high pressure

Answer is:

low pressure

37) The cavitation in a hydraulic machine

causes noise and vibration of various parts

reduces the discharge of a turbine

causes sudden drop in power output and efficiency

all of the above

Answer is:

all of the above

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