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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
2700
2100
21000

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Hydraulics and Fluid Mechanics in ME
A liquid compressed in cylinder has a volume of 0.04 m3 at 50 kg/cm² and a volume of 0.039 m3 at 150 kg/cm². The bulk modulus of elasticity of liquid is

40 × 10⁵ kg/cm²
40 × 10⁶ kg/cm²
4000 kg/cm²
400 kg/cm²

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

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

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Hydraulics and Fluid Mechanics in ME
Total pressure on a lmxlm gate immersed vertically at a depth of 2 m below the free water surface will be

4000 kg
1000 kg
2000 kg
8000 kg

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Hydraulics and Fluid Mechanics in ME
A metal with specific gravity of 'a' floating in a fluid of same specific gravity 'a' will

Partly immersed
Be fully immersed with top surface at fluid surface
Sink to bottom
Float over fluid

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Hydraulics and Fluid Mechanics in ME
The discharge over a right angled notch is (where H = Height of liquid above the apex of notch)

(8/15) Cd. 2g. H5/2
(8/15) Cd. 2g. H²
(8/15) Cd. 2g. H3/2
(8/15) Cd. 2g. H

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