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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
If the velocity is zero over half of the cross-sectional area and is uniform over the remaining half, then the momentum correction factor is

43924
4
2
1

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Hydraulics and Fluid Mechanics in ME
A liquid compressed in cylinder has a volume of 0.04 m3 at 50 kg/cm² and a volume of 0.039 m3 at 150 kg/cm². The bulk modulus of elasticity of liquid is

40 × 10⁵ kg/cm²
40 × 10⁶ kg/cm²
4000 kg/cm²
400 kg/cm²

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Hydraulics and Fluid Mechanics in ME
An impulse turbine is used for

High discharge
High head of water
Medium head of water
Low head of water

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Hydraulics and Fluid Mechanics in ME
The maximum efficiency of transmission through a pipe is

0.567
0.7666
0.6667
0.5

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Hydraulics and Fluid Mechanics in ME
The depth of the centre of pressure on a vertical rectangular gate 8 m wide and 6 m high, when the water surface coincides with the top of the gate, is

4.0 m
3.0 m
2.4 m
5.0 m

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Hydraulics and Fluid Mechanics in ME
If a pump is handling water and is discharging a certain flow Q at a constant total dynamic head requiring a definite B.H.P., the same pump when handling a liquid of specific gravity 0.75 and viscosity nearly same as of water would discharge

Q/0.75
1.5 Q
0.75 Q
Same quantity of liquid

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