Questions and answers for exam Preparation

MCQs

Total Questions : 304 | Page 2 of 31 pages

Question 11. The Furneyron turbine is __________ reaction turbine.

an axial flow
an inward flow
an outward flow
a mixed flow

Discuss Question

Answer: Option C. -> an outward flow
Answer: (c).an outward flow

Question 12. A hydraulic accumulator is a device used to store __________ energy which may be supplied to a machine later on.

strain
pressure
kinetic
None of these

Discuss Question

Answer: Option B. -> pressure
Answer: (b).pressure

Question 13. The discharge through a turbine is

directly proportional to H^1/2
inversely proportional to H^1/2
directly proportional to H^3/2
inversely proportional to H^3/2

Discuss Question

Answer: Option A. -> directly proportional to H^1/2
Answer: (a).directly proportional to H^1/2

Question 14. The cavitation in a hydraulic machine is mainly due to

low velocity
high velocity
low pressure
high pressure

Discuss Question

Answer: Option C. -> low pressure
Answer: (c).low pressure

Question 15. The unit speed of the turbine runner is

N/√H
N/H
N/H^3/2
N/H²

Discuss Question

Answer: Option A. -> N/√H
Answer: (a).N/√H

Question 16. A hydraulic press is a device used

to store pressure energy which may be supplied to a machine later on
to increase the intensity of pressure of water by means of energy available from a large quantity of water at a low pressure
to lift larger load by the application of a comparatively much smaller force
all of the above

Discuss Question

Answer: Option C. -> to lift larger load by the application of a comparatively much smaller force
Answer: (c).to lift larger load by the application of a comparatively much smaller force

Question 17. In an outward flow reaction turbine

the water flows parallel to the axis of the wheel
the water enters at the centre of the wheel and then flows towards the outer periphery of the wheel
the water enters the wheel at the outer periphery and then flows towards the centre of the wheel
the flow of water is partly radial and partly axial

Discuss Question

Answer: Option B. -> the water enters at the centre of the wheel and then flows towards the outer periphery of the wheel
Answer: (b).the water enters at the centre of the wheel and then flows towards the outer periphery of the wheel

Question 18. Which of the following pump is successfully used for lifting water from deep wells?