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

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

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Hydraulics and Fluid Mechanics in ME
Surface tension

Is a function of the curvature of the interface
Decreases with fall in temperature
Acts in the plane of the interface normal to any line in the surface
Is also known as capillarity

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Hydraulics and Fluid Mechanics in ME
The total energy of a liquid particle in motion is equal to

Potential energy - (pressure energy + kinetic energy
Pressure energy - (kinetic energy + potential energy)
Kinetic energy - (pressure energy + potential energy)
Pressure energy + kinetic energy + potential energy

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