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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
When a piping system is made up primarily of vertical lift and very little pipe friction, the pump characteristics should be

First rise and then fall
Horizontal
Nearly horizontal
Steep

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Hydraulics and Fluid Mechanics in ME
In a depressed nappe

The pressure below the nappe is negative
The pressure above the nappe is negative
The pressure above the nappe is atmospheric
The pressure below the nappe is atmospheric

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Hydraulics and Fluid Mechanics in ME
Manometer is used to measure

very low pressure
pressure in pipes, channels etc
difference of pressure between two points
atmospheric pressure

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Hydraulics and Fluid Mechanics in ME
The total pressure on an immersed surface inclined at an angle θ with the liquid surface is

wA
wx
wAx
wAx/sinθ

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Hydraulics and Fluid Mechanics in ME
The undershot water wheels are those in which

The wheel runs partly by the weight of water and partly by the impulse of water
The wheel runs entirely by the weight of water
The wheel runs entirely by the impulse of water
None of these

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

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

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