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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The specific weight of water in S.I. units is taken as

9.81 × 10-6 N/mm3
Any one of these
9.81 × 103 N/m3
9.81 kN/m3

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Hydraulics and Fluid Mechanics in ME
The centrifugal pump preferred for a specific speed between 80 to 160 r.p.m. is

Medium speed with radial flow at outlet
High speed with radial flow at outlet
High speed with mixed flow at outlet
Slow speed with radial flow at outlet

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Hydraulics and Fluid Mechanics in ME
A submerged body is said to be in a stable equilibrium, if its centre of gravity __________ the centre of buoyancy.

Coincides with
Lies above
Lies below
None of these

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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 pressure
metacentre
center of buoyancy
center of gravity

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Hydraulics and Fluid Mechanics in ME
Medium specific speed of turbine implies it is

Any one of the above
Francis turbine
Propeller turbine
Impulse turbine

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Hydraulics and Fluid Mechanics in ME
The discharge through a channel of circular section will be maximum when the depth of water is __________ the diameter of the circular channel.

0.34 times
0.95 times
0.81 times
0.67 times

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