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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Falling drops of water become spheres due to the property of

viscosity
surface tension
cohesion
adhesion

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Hydraulics and Fluid Mechanics in ME
Francis turbine is best suited for

All types of heads
Medium head application from 24 to 180 m
High head installation above 180 m
Low head installation up to 30 m

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Hydraulics and Fluid Mechanics in ME
The property by virtue of which a liquid opposes relative motion between its different layers is called

Viscosity
Coefficient of viscosity
Osmosis
Surface tension

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Hydraulics and Fluid Mechanics in ME
A tank of uniform cross-sectional area (A) containing liquid upto height (H1) has an orifice of cross-sectional area (a) at its bottom. The time required to empty the tank completely will be

(2AH₁)/(Cd × a√2g)
(2A√H₁)/(Cd × a√2g)
(2AH₁²)/(Cd × a√2g)
(2AH₁3/2)/(Cd × a√2g)

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Hydraulics and Fluid Mechanics in ME
One horsepower is equal to

75 watts
102 watts
550 watts
735 watts

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Hydraulics and Fluid Mechanics in ME
The force of buoyancy is always __________ the weight of the liquid displaced by the body.

More than
Less than
None of these
Equal to

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