Explore topic-wise MCQs in Power Plant.

This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Power Plant knowledge and support exam preparation. Choose a topic below to get started.

1.

What is the formula for the velocity of water jet at the inlet of turbine?Where,H = Net head acting on Pelton wheelCv = coefficient of velocity of jet

A. V = Cv((gH)(1/2))
B. V = 2Cv((gH)(1/2))
C. V = Cv((2gH)(1/2))
D. V = 2Cv((gH)(1/2))
Answer» D. V = 2Cv((gH)(1/2))
Discussion
2.

Which of the following pump is generally used to pump highly viscous fluid?

A. Air lift pump
B. Centrifugal pump
C. Screw pump
D. Reciprocating pump
Answer» B. Centrifugal pump
Discussion
3.

By fitting an air vessel to the reciprocating pump, there is always a saving of work done and subsequently saving of power. This saving in case of a single acting reciprocating pump is

A. 0.848
B. 0.748
C. 0.648
D. 0.548
Answer» B. 0.748
Discussion
4.

What is runaway speed of the runner of Pelton wheel?

A. maximum unsafe speed of the runner due to sudden increase in load on turbine
B. minimum safe speed of the runner due to sudden increase in load on turbine
C. maximum unsafe speed of the runner due to sudden decrease in load on turbine
D. minimum safe speed of the runner due to sudden decrease in load on turbine
Answer» D. minimum safe speed of the runner due to sudden decrease in load on turbine
Discussion
5.

The working of which of the following hydraulic units is based on Pascal's law?

A. Hydraulic coupling
B. Air lift pump
C. Jet pump
D. Hydraulic press
Answer» E.
Discussion
6.

Gross head is the difference between __________

A. head race and tail race
B. head race and net head
C. head race and friction losses
D. net head and friction losses
Answer» B. head race and net head
Discussion
7.

The maximum efficiency of jet propulsion of a ship with inlet orifices at right angles to the direction of motion of ship, will be

A. 0.4
B. 0.5
C. 0.6
D. 0.8
Answer» C. 0.6
Discussion