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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
To avoid an interruption in the flow of a siphon, an air vessel is provided

At the summit
At any point between inlet and outlet
At the inlet
At the outlet

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Hydraulics and Fluid Mechanics in ME
The speed of a pressure wave through a pipe depends upon

the bulk modulus for the fluid
the length of pipe
the original head
the viscosity of fluid

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Hydraulics and Fluid Mechanics in ME
A flow is called super-sonic if the

Mach number is between 1 and 6
None of these
Discharge is difficult to measure
Velocity of flow is very high

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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

Four times
Sixteen times
Double
Eight times

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Hydraulics and Fluid Mechanics in ME
The power transmitted through the pipe is maximum when the head lost due to friction is equal to

One-third of the total supply head
One-fourth of the total supply head
One-half of the total supply head
Two-third of the total supply head

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Hydraulics and Fluid Mechanics in ME
The loss of head due to friction in a pipe of uniform diameter in which a viscous flow is taking place, is (where RN = Reynold number)

1/RN
4/RN
64/RN
16/RN

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