Hydraulics and Fluid Mechanics in ME
Discharge of a centrifugal pump is

Inversely proportional to (diameter)² of its impeller
Directly proportional to (diameter)² of its impeller
Directly proportional to diameter of its impeller
Inversely proportional to diameter of its impeller

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Hydraulics and Fluid Mechanics in ME
Which of the following is an incorrect statement ?

Discharge is independent of orientation of venturimeter whether it is horizontal, vertical or inclined
None of these
Flow nozzle is cheaper than venturimeter but has higher energy loss
Coefficient of contraction of a venturimeter is unity

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

Actual velocity of jet at vena contracta to the theoretical velocity
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
Loss of head in the orifice to the head of water available at the exit of the orifice

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