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Mechanical Engineering - Hydraulic Machines

Exercise : Hydraulic Machines - Section 2
46.
Power required to drive a centrifugal pump is __________ proportional to N3.
directly
inversely
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
The force exerted (in newton) by a jetof water impinging normally on a fixed plate is (where w = Specific weight of water in N/m3, a = Cross-sectional area of jet in m2, and V = Velocity of jet in m/s)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
The unit power developed by a turbine is (where P = Power developed by the turbine under a head of water (H))
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
A Pelton wheel develops 1750 kW under a head of 100 metres while running at 200 r.p.m. and discharging 2500 litres of water per second. The unit discharge of wheel is
0.25 m3/s
0.5 m3/s
1.5 m3/s
2.5 m3/s
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
Delivery head of a centrifugal pump is
directly proportional to N
inversely proportional to N
directly proportional to N2
inversely proportional to N2
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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