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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The power transmitted through the nozzle is maximum when the head lost due to friction in the pipe is __________ of the total supply head.

None of these
One-half
One-third
Two-third

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Hydraulics and Fluid Mechanics in ME
The hydraulic gradient line lies over the centre line of the pipe by an amount equal to the

Pressure head - velocity head
Velocity head
Pressure head + velocity head
Pressure head

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Hydraulics and Fluid Mechanics in ME
The stability of a dam is checked for

All of these
Tension at the base
Overturning of the wall or dam
Sliding of the wall or dam

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Hydraulics and Fluid Mechanics in ME
Centre of pressure compared to e.g. is

above or below depending on area of body
below it
at same point
above it

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Hydraulics and Fluid Mechanics in ME
Which of the following manometer has highest sensitivity

inclined U-tube
micro-manometer with water
U-tube with water
U-tube with mercury

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Hydraulics and Fluid Mechanics in ME
For pipes, laminar flow occurs when Roynolds number is

less than 2000
between 2000 and 4000
less than 4000
more than 4000

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