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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The center of gravity of the volume of the liquid displaced by an immersed body is called

center of gravity
center of buoyancy
metacentre
center of pressure

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Hydraulics and Fluid Mechanics in ME
Pitot tube is used for measurement of

dsscharge
velocity
flow
pressure

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Hydraulics and Fluid Mechanics in ME
For laminar flow in circular pipes, the Darcy’s friction factor f is equal to

32/ Re
None of these
16/Re
64/ Re

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Hydraulics and Fluid Mechanics in ME
The discharge through a reaction turbine ___ with the increase in unit speed.

Increases
Remain same
Decreases
None of the listed here

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Hydraulics and Fluid Mechanics in ME
By fitting an air vessel to the reciprocating pump, there is always a saving of work done and subsequently saving of power. The saving in case of a double acting reciprocating pump is

0.884
0.848
0.392
0.488

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Hydraulics and Fluid Mechanics in ME
A model of a reservior is drained in 4 mts by opening the sluice gate. The model scale is 1: 225. How long should it take to empty the prototype ?

4 (225)1/3 minutes
4 x V225 minutes
4 x (225)3/2 minutes
4 minutes

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