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

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

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Hydraulics and Fluid Mechanics in ME
The intensity of pressure at any point, in a liquid, is

Inversely proportional to the depth of liquid from the surface
Directly proportional to the length of the vessel containing liquid
Directly proportional to the depth of liquid from the surface
Directly proportional to the area of the vessel containing liquid

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Hydraulics and Fluid Mechanics in ME
Stanton diagram is a

log-log plot of friction factor against Reynolds number
log-log plot of relative roughness against Reynolds number
semi-log plot of friction factor against relative roughness
semi-log plot of friction factor against Reynolds number

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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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