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Fluid Mechanics

Fluid Mechanics
The ratio of actual discharge to theoretical discharge through an orifice is equal to

Cv . Cd
Cc . Cd
Cc . Cv
Cd/Cv

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Fluid Mechanics
Medium viscosity lubricating oil can be most ideally pumped by a __________ pump.

Centrifugal
Piston
Plunger
Vane

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Fluid Mechanics
Unsteady uniform flow is represented by flow through a/an

Expanding tube at increasing rate
Expanding tube at constant rate
Long pipe at decreasing rate
Long pipe at constant rate

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Fluid Mechanics
The energy loss in flow through ven-turimeter is less than that through flow nozzle, because in case of a flow nozzle, the

Throat diameter is more
Length is shorter
Sudden expansion of flow in the downstream occurs
Distance between the throat and the inlet is more

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Fluid Mechanics
With increase in the ratio of orifice diameter to pipe diameter in case of an orificemeter, the overall pressure loss

Decreases
Remains constant
Increases linearly
Increases

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Fluid Mechanics
Which of the following is used for very accurate measurement of flow of gas at low velocity?

Rotameter
Hot wire annemometer
Segmental orificemeter
Pitot tube

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