[A]. product
[B]. difference
[C]. sum
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✅ The correct answer is option C.
Hydraulic Machines MCQs
The force exerted by a jet of water (in a direction normal to flow) impinging on a fixed plate inclined at an angle θ with the jet is
[A].
[B].
[C].
[D].
✅ The correct answer is option C.
Work done by a turbine __________ upon the weight of water flowing per second.
[A]. depends
[B]. does not depend
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null
✅ The correct answer is option A.
In an impulse turbine, the jet of water impinges on the bucket with a low velocity and after flowing over the vanes, leaves with a high velocity.
[A]. True
[B]. False
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null
✅ The correct answer is option B.
The capacity of a hydraulic accumulator is generally specified as the maximum amount of energy stored.
[A]. True
[B]. False
null
null
✅ The correct answer is option A.
The speed of an imaginary turbine, identical with the given turbine, which will develop a unit power under a unit head, is known as
[A]. normal speed
[B]. unit speed
[C]. specific speed
[D]. none of these
✅ The correct answer is option C.
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
✅ The correct answer is option B.
In a reciprocating pump, air vessels are fitted to the suction pipe and delivery pipe close to the cylinder of the pump.
[A]. True
[B]. False
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null
✅ The correct answer is option A.
The maximum efficiency of jet propulsion of a ship with inlet orifices at right angles to the direction of motion of ship, is
[A]. 40%
[B]. 50%
[C]. 60%
[D]. 80%
✅ The correct answer is option B.
The specific speed of a centrifugal pump, delivering 750 litres of water per second against a head of 15 metres at 725 r.p.m., is
[A]. 24.8 r.p.m.
[B]. 48.2 r.p.m
[C]. 82.4 r.p.m.
[D]. 248 r.p.m
✅ The correct answer is option C.