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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
A Piezometer tube is used only for measuring

Vacuum pressure
Low pressure
High pressure
Moderate pressure

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Hydraulics and Fluid Mechanics in ME
The cavitation in a hydraulic machine

Causes noise and vibration of various parts
Reduces the discharge of a turbine
Causes sudden drop in power output and efficiency
All of these

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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
5.0 m
2.4 m
3.0 m

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Hydraulics and Fluid Mechanics in ME
The Francis formula for the discharge over Cipoletti weir is

1.84 LH
1.84 LH1/2
1.84 LH5/2
1.84 LH3/2

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Hydraulics and Fluid Mechanics in ME
The pressure of fluid due to hammer blow is

Directly proportional to (density)1/2 of fluid
Directly proportional to density of fluid
Inversely proportional to density of fluid
Inversely proportional to (density)1/2 of fluid

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Hydraulics and Fluid Mechanics in ME
The discharge through a reaction turbine ___ with the increase in unit speed.

None of the listed here
Decreases
Increases
Remain same

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