Hydraulics and Fluid Mechanics in ME
The type of centrifugal pump preferred for a specific speed of 20 r.p.m. is

High speed pump with radial flow at outlet
High speed pump with axial flow at outlet
Medium speed pump with radial flow at outlet
Slow speed pump with radial flow at outlet

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

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
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

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Hydraulics and Fluid Mechanics in ME
When a cylindrical vessel containing liquid is revolved about its vertical axis at a constant angular velocity, the pressure

Varies as the square of the radial distance
Increases as the square of the radial distance
Decreases as the square of the radial distance
Increases linearly as its radial distance

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Hydraulics and Fluid Mechanics in ME
The kinematic viscosity is the

Product of absolute viscosity and density of the liquid
Ratio of absolute viscosity to the density of the liquid
Product of absolute viscosity and mass of the liquid
Ratio of density of the liquid to the absolute viscosity

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