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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
An object having 10 kg mass weighs 9.81 kg on a spring balance. The value of 'g' at this place is

9.75 m/sec²
9.81 m/sec²
10 m/sec²
9 m/sec

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Hydraulics and Fluid Mechanics in ME
If the atmospheric pressure on the surface of an oil tank (sp. gr. 0.8) is 0.2 kg/cm”, the pressure at a depth of 50 m below the oil surface will be

6 meters of water Column
5 meters of water column
2 meters of water column
3 meters of water column

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Hydraulics and Fluid Mechanics in ME
During the opening of a valve in a pipe line, the flow is

Steady
Laminar
Unsteady
Uniform

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Hydraulics and Fluid Mechanics in ME
The optimum value of vane exit angle for a centrifugal pump impeller is

20-25°
50-60°
30-40°
10-15°

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Hydraulics and Fluid Mechanics in ME
The length of the divergent cone in a Venturimeter is __________ that of the convergent cone.

Equal to
Five to six times
Double
Three to four times

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Hydraulics and Fluid Mechanics in ME
Air vessels in reciprocating pump are used to

Reduce acceleration to minimum
Increase pump efficiency
Save pump from cavitations
Smoothen flow

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