Fluid Mechanics

531.The maximum delivery pressure of compressors can be upto _________ atmospheres.

1. 10
2. 100
3. 250
4. 1000

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532.The maximum depth from which a centrifugal pump can draw water is

1. Dependent on the speed of the pump
2. Dependent on the power of the pump
3. 34 feet
4. 150 feet

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533.The maximum discharge through a circular channel takes place, when the depth of the fluid flow is _________ times the pipe diameter.

1. 0.25
2. 0.5
3. 0.66
4. 0.95

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534.The maximum head that can be developed by a single impeller is _________ ft.

1. 25
2. 100
3. 250-300
4. 1000

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535.The momentum correction factor for the velocity distribution of laminar flow is

1. 1.3
2. 1.66
3. 2.5
4. None of these

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536.The most economical flow control valve for use with large diameter pipes is a

1. Butterfly valve
2. Globe valve
3. Needle valve
4. None of these

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537.The most important factor, which determines the maximum height to which water can be lifted by a pump at standard temperature is the

1. Barometric pressure
2. Speed of the impeller
3. Diameter of the impeller
4. Both (B) and (C)

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538.The most serious disadvantage of an orificemeter is that

1. It is not very accurate
2. It is very costly
3. Most of the pressure drop is not recoverable
4. It is not suitable for measuring gas flow

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539.The most suitable flow measuring device for the fluid flow measurement in a very large diameter pipeline is a

1. Weir
2. Pitot tube
3. Kennison nozzle
4. V-notch

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540.The Navier-Stokes equation deals with the law of conservation of

1. Mass
2. Energy
3. Both (A) & (B)
4. Momentum

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