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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

2700
10000
21000
2100

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

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

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Hydraulics and Fluid Mechanics in ME
According to fan laws, for fans having constant wheel diameter, the pressure varies

Directly as fan speed
Square root of fan speed
Cube of fan speed
Square of fan speed

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Hydraulics and Fluid Mechanics in ME
The total pressure on the top of a closed cylindrical vessel of radius (r) completely filled up with liquid of specific weight (w) and rotating at (ω) rad/s about its vertical axis, is

π w ω² r²/2g
π w ω² r²/4g
π w ω² r⁴/4g
π w ω² r³/4g

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Hydraulics and Fluid Mechanics in ME
A hydraulic press has a ram of 15 cm diameter and plunger of 1.5 cm. It is required to lift a weight of 1 tonne. The force required on plunger is equal to

1000 kg
100 kg
1 kg
10 kg

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Hydraulics and Fluid Mechanics in ME
Center of buoyancy is the

center of pressure of displaced volume
does not exist
e.g. of floating body
centroid of the displaced volume of fluid

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MORE MCQ ON Hydraulics and Fluid Mechanics in ME

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