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)

wQ (Hs - Hd)

wQHs

wQHd

wQ (Hs + Hd)

wQ (Hs - Hd)

wQHs

wQHd

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Hydraulics and Fluid Mechanics in ME
An orifice is said to be large, if

The available head of liquid is less than 5 times the height of orifice

The velocity of flow is large

The size of orifice is large

The available head of liquid is more than 5 times the height of orifice

The available head of liquid is less than 5 times the height of orifice

The velocity of flow is large

The size of orifice is large

The available head of liquid is more than 5 times the height of orifice

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Hydraulics and Fluid Mechanics in ME
The efficiency of jet propulsion for a ship with inlet orifices at right angles to the direction of motion of ship is given by

[(Vr - v) v]/ Vr

[2(Vr - v) v]/ Vr²

[2(Vr + v) v]/ Vr²

[(Vr + v) v]/ Vr

[(Vr - v) v]/ Vr

[2(Vr - v) v]/ Vr²

[2(Vr + v) v]/ Vr²

[(Vr + v) v]/ Vr

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Hydraulics and Fluid Mechanics in ME
To avoid an interruption in the flow of a siphon, an air vessel is provided

At the outlet

At the inlet

At any point between inlet and outlet

At the summit

At the outlet

At the inlet

At any point between inlet and outlet

At the summit

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Hydraulics and Fluid Mechanics in ME
An ideal flow of any fluid must fulfill the following

Pascal’ law

Continuity equation

Newton’s law of viscosity

Newton’s law of motion

Pascal’ law

Continuity equation

Newton’s law of viscosity

Newton’s law of motion

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Hydraulics and Fluid Mechanics in ME
A Pelton wheel develops 1750 kW under a head of 100 meters while running at 200 r.p.m. and discharging 2500 liters of water per second. The unit speed of the wheel is

40 r.p.m.

10 r.p.m.

20 r.p.m.

80 r.p.m.

40 r.p.m.

10 r.p.m.

20 r.p.m.

80 r.p.m.

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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 An orifice is said to be large, if

Hydraulics and Fluid Mechanics in ME The efficiency of jet propulsion for a ship with inlet orifices at right angles to the direction of motion of ship is given by

Hydraulics and Fluid Mechanics in ME To avoid an interruption in the flow of a siphon, an air vessel is provided

Hydraulics and Fluid Mechanics in ME An ideal flow of any fluid must fulfill the following

Hydraulics and Fluid Mechanics in ME A Pelton wheel develops 1750 kW under a head of 100 meters while running at 200 r.p.m. and discharging 2500 liters of water per second. The unit speed of the wheel is

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
An orifice is said to be large, if

Hydraulics and Fluid Mechanics in ME
The efficiency of jet propulsion for a ship with inlet orifices at right angles to the direction of motion of ship is given by

Hydraulics and Fluid Mechanics in ME
To avoid an interruption in the flow of a siphon, an air vessel is provided

Hydraulics and Fluid Mechanics in ME
An ideal flow of any fluid must fulfill the following

Hydraulics and Fluid Mechanics in ME
A Pelton wheel develops 1750 kW under a head of 100 meters while running at 200 r.p.m. and discharging 2500 liters of water per second. The unit speed of the wheel is