Hydraulics and Fluid Mechanics in ME
The angle of contact in case of a liquid depends upon

both of die above
any one of the above
the nature of the liquid and the solid
the material which exists above the free surface of the liquid

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Hydraulics and Fluid Mechanics in ME
Manometric head, in case of a centrifugal pump, is equal to

Suction lift + Loss of head in suction pipe due to friction + Delivery lift + Loss of head in delivery pipe due to friction + Velocity head in the delivery pipe
All of these
Work-done per kN of water Losses within the impeller
Energy per kN at outlet of impeller Energy per kN at inlet of impeller

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Hydraulics and Fluid Mechanics in ME
Coefficient of resistance is the ratio of

Actual discharge through an orifice to the theoretical discharge
Loss of head in the orifice to the head of water available at the exit of the orifice
Area of jet at vena-contracta to the area of orifice
Actual velocity of jet at vena-contracta to the theoretical velocity

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