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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The value of the coefficient of compressibility for water at ordinary pressure and temperature in kg/cm is equal to

10000
2100
2700
21000

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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
A structure used to dam up a stream or river over which the water flows is called

Weir
Dam
Orifice
Notch

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Hydraulics and Fluid Mechanics in ME
The jet ratio is defined as the ratio of the

Velocity of jet to the velocity of Pelton wheel
Diameter of jet to the diameter of Pelton wheel
Velocity of Pelton wheel to the velocity of jet
Diameter of Pelton wheel to the diameter of jet

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Hydraulics and Fluid Mechanics in ME
Piezometer is used to measure

Pressure in pipe, channels etc
Very low pressures
Difference of pressure between two points
Atmospheric pressure

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Hydraulics and Fluid Mechanics in ME
The units of dynamic or absolute viscosity are

metres² per sec
newton-sec² per meter
newton-sec per meter
kg sec/meter

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