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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Coefficient of discharge for a totally submerged orifice as compared to that for an orifice discharging free is

equal
slightly more
nearly half
slightly less

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Hydraulics and Fluid Mechanics in ME
The flow rate in gear pump

Unpredictable
More or less remains constant with increase in pressure
Increases with increase in pressure
Decreases with increase in pressure

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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

4
2
43924
1

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Hydraulics and Fluid Mechanics in ME
The depth of the center 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

2.4 m
4.0 m
3.0 m
2.5 m

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Hydraulics and Fluid Mechanics in ME
High specific speed of a pump implies it is

Centrifugal pump
Mixed flow pump
Axial flow pump
Any one of the above

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Hydraulics and Fluid Mechanics in ME
The flow in which conditions do not change with time at any point, is known as

turbulent flow
uniform flow
one dimensional flow
steady flow

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