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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Viscous force is the __________ of shear stress due to viscosity and cross-section area of flow.

Product
Ratio
Different
Sum

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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.

Lies above
None of these
Lies below
Coincides with

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Hydraulics and Fluid Mechanics in ME
If a pump is handling water and is discharging a certain flow Q at a constant total dynamic head requiring a definite B.H.P., the same pump when handling a liquid of specific gravity 0.75 and viscosity nearly same as of water would discharge

Same quantity of liquid
1.5 Q
0.75 Q
Q/0.75

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Hydraulics and Fluid Mechanics in ME
If cohesion between molecules of a fluid is greater than adhesion between fluid and glass, then the free level of fluid in a dipped glass tube will be

Lower than the surface of liquid
Unpredictable
Higher than the surface of liquid
The same as the surface of liquid

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Hydraulics and Fluid Mechanics in ME
A metal with specific gravity of 'a' floating in a fluid of same specific gravity 'a' will

Partly immersed
Sink to bottom
Float over fluid
Be fully immersed with top surface at fluid surface

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Hydraulics and Fluid Mechanics in ME
Liquids

Occupy definite volume
None of the listed here
Are not affected by change in pressure and temperature
Cannot be compressed

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