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

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

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Hydraulics and Fluid Mechanics in ME
The discharge through a wholly drowned orifice is given by (where H1 = Height of water (on the upstream side) above the top of the orifice, H2 = Height of water (on the downstream side) above the bottom of the orifice, and H = Difference between two water levels on either side of the orifice)

Q = Cd × b (H2 - H1) × √(2gh)
Q = Cd × bH₁ × √(2gh)
Q = Cd × bH × √(2gh)
Q = Cd × bH2 × √(2gh)

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Hydraulics and Fluid Mechanics in ME
Coefficient of velocity is defined as the ratio of

Actual velocity of jet at vena contracta to the theoretical velocity
None of these
Actual discharge through an orifice to the theoretical discharge
Area of jet at vena contracta to the area of orifice

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