Theoretical power required (in watts) to drive a reciprocating pump is (where w = Specific weight of liquid to be pumped in N/m3, Q = Discharge of the pump in m3/s, Hs = Suction head in meters, and Hd = Delivery head in meters)

Hydraulics and Fluid Mechanics in ME
Theoretical power required (in watts) to drive a reciprocating pump is (where w = Specific weight of liquid to be pumped in N/m3, Q = Discharge of the pump in m3/s, Hs = Suction head in meters, and Hd = Delivery head in meters)

wQ (Hs - Hd)

wQHd

wQHs

wQ (Hs + Hd)

wQ (Hs - Hd)

wQHd

wQHs

wQ (Hs + Hd)

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Hydraulics and Fluid Mechanics in ME
A jet of water discharging from a 40 mm diameter orifice has a diameter of 32 mm at its vena contracta. The coefficient of contraction is

0.46

0.64

0.87

0.78

0.46

0.64

0.87

0.78

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Hydraulics and Fluid Mechanics in ME
A square surface 3 m x 3 m lies in a vertical line in water pipe its upper edge at vater surface. The hydrostatic force on square surface is

27,000 kg

18,000 kg

13,500 kg

9,000 kg

27,000 kg

18,000 kg

13,500 kg

9,000 kg

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

Pressure head - (kinetic head + potential head)

Kinetic head - (pressure head + potential head)

Pressure head + kinetic head + potential head

Potential head - (pressure head + kinetic head)

Pressure head - (kinetic head + potential head)

Kinetic head - (pressure head + potential head)

Pressure head + kinetic head + potential head

Potential head - (pressure head + kinetic head)

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Hydraulics and Fluid Mechanics in ME
The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a triangular notch is given by

dQ/Q = 3 × (dH/H)

dQ/Q = 5/2 × (dH/H)

dQ/Q = 3/2 × (dH/H)

dQ/Q = 2 × (dH/H)

dQ/Q = 3 × (dH/H)

dQ/Q = 5/2 × (dH/H)

dQ/Q = 3/2 × (dH/H)

dQ/Q = 2 × (dH/H)

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Hydraulics and Fluid Mechanics in ME
For starting an axial flow pump, its delivery valve should be

Could be either open or closed

Depends on starting condition and flow desired

Open

Closed

Could be either open or closed

Depends on starting condition and flow desired

Open

Closed

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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME Theoretical power required (in watts) to drive a reciprocating pump is (where w = Specific weight of liquid to be pumped in N/m3, Q = Discharge of the pump in m3/s, Hs = Suction head in meters, and Hd = Delivery head in meters)

Hydraulics and Fluid Mechanics in ME A jet of water discharging from a 40 mm diameter orifice has a diameter of 32 mm at its vena contracta. The coefficient of contraction is

Hydraulics and Fluid Mechanics in ME A square surface 3 m x 3 m lies in a vertical line in water pipe its upper edge at vater surface. The hydrostatic force on square surface is

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

Hydraulics and Fluid Mechanics in ME The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a triangular notch is given by

Hydraulics and Fluid Mechanics in ME For starting an axial flow pump, its delivery valve should be

Hydraulics and Fluid Mechanics in ME
Theoretical power required (in watts) to drive a reciprocating pump is (where w = Specific weight of liquid to be pumped in N/m3, Q = Discharge of the pump in m3/s, Hs = Suction head in meters, and Hd = Delivery head in meters)

Hydraulics and Fluid Mechanics in ME
A jet of water discharging from a 40 mm diameter orifice has a diameter of 32 mm at its vena contracta. The coefficient of contraction is

Hydraulics and Fluid Mechanics in ME
A square surface 3 m x 3 m lies in a vertical line in water pipe its upper edge at vater surface. The hydrostatic force on square surface is

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

Hydraulics and Fluid Mechanics in ME
The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a triangular notch is given by

Hydraulics and Fluid Mechanics in ME
For starting an axial flow pump, its delivery valve should be