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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
In a footstep bearing, if the radius of the shaft is doubled, then the torque required to overcome the viscous resistance will be

Eight times
Sixteen times
Double
Four times

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Hydraulics and Fluid Mechanics in ME
The absolute pressure is equal to

Atmospheric pressure - gauge pressure
Gauge pressure - vacuum pressure
Gauge pressure + atmospheric pressure
Gauge pressure - atmospheric pressure

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Hydraulics and Fluid Mechanics in ME
An internal mouthpiece is said to be running __________ if the length of the mouthpiece is more than three times the diameter of the orifice.

None of these
Partially
Free
Full

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Hydraulics and Fluid Mechanics in ME
The coefficient of discharge for an external mouthpiece depends upon

Pressure of liquid
Length of mouthpiece
Velocity of liquid
Area of mouthpiece

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Hydraulics and Fluid Mechanics in ME
A pressure of 25 m of head of water is equal to

25 kN/m2
245 kN/m2
2500 kN/m2
2.5 kN/m2

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Hydraulics and Fluid Mechanics in ME
In order to measure the flow with a Venturimeter, it is installed in

Any direction and in any location
Inclined line with flow upwards
Horizontal line
Inclined line with flow downwards

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