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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The total pressure on the surface of a vertical sluice gate 2 m x 1 m with its top 2 m surface being 0.5 m below the water level will be

1000 kg
1500 kg
2000 kg
500 kg

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Hydraulics and Fluid Mechanics in ME
The speed ratio in case of Francis turbine varies from

0.4 to 0.5
0.6 to 0.9
1 to 1.5
0.15 to 0.3

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Hydraulics and Fluid Mechanics in ME
The ratio of quantity of liquid discharged per second from the pump to the quantity of liquid passing per second through the impeller is known as

Manometric efficiency
Volumetric efficiency
Mechanical efficiency
Overall efficiency

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Hydraulics and Fluid Mechanics in ME
The vapour pressure over the concave surface is

zero
equal to the vapour pressure over the plane surface
less man the vapour pressure over the plane surface
greater than the vapour pressure over the plane surface

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Hydraulics and Fluid Mechanics in ME
According to fan laws, for the fans having constant wheel diameters, the power demand varies

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

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Hydraulics and Fluid Mechanics in ME
The capillary rise at 20°C in a clean glass tube of 1 mm bore containing water is approximately

10 mm
30 mm
5 mm
20 mm

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