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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The discharge through a siphon spillway is

Cd × a × √(2g) × H5/2
Cd × a × √(2gH)
Cd × a × √(2g) × H2
Cd × a × √(2g) × H3/2

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Hydraulics and Fluid Mechanics in ME
Motion of a liquid in a volute casing of a centrifugal pump is an example of

Rotational flow
Radial
Forced spiral vortex flow
Spiral vortex flow

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Hydraulics and Fluid Mechanics in ME
The most economical section of a trapezoidal channel is one which has hydraulic mean depth equal to

1/2 × depth
1/2 × breadth
1/4 × (depth + breadth)
1/2 × sloping side

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Hydraulics and Fluid Mechanics in ME
A venturi-flume is used to measure

Discharge of liquid
Pressure difference between two points in a pipe
Pressure difference between two points in a channel
Pressure of liquid

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Hydraulics and Fluid Mechanics in ME
The time oscillation of a floating body with increase in meatcentric height will be

Lower
Higher
Lower/higher depending on weight of body
Same

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Hydraulics and Fluid Mechanics in ME
The hydraulic efficiency of an impulse turbine is maximum when velocity of wheel is _______ of the jet velocity,

Double
One-fourth
One-half
Three-fourth

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