If a pump is handling water and is discharging a certain flow Q at a constant total dynamic head requiring a definite B.H.P., the same pump when handling a liquid of specific gravity 0.75 and viscosity nearly same as of water would discharge

Hydraulics and Fluid Mechanics in ME
If a pump is handling water and is discharging a certain flow Q at a constant total dynamic head requiring a definite B.H.P., the same pump when handling a liquid of specific gravity 0.75 and viscosity nearly same as of water would discharge

Q/0.75

1.5 Q

0.75 Q

Same quantity of liquid

Q/0.75

1.5 Q

0.75 Q

Same quantity of liquid

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Hydraulics and Fluid Mechanics in ME
Cavitation will begin when

flow is increased

the pressure at any location reaches an absolute pressure equal to the saturated vapour pressure of the liquid

pressure becomes more than critical pressure

pressure is increased

flow is increased

the pressure at any location reaches an absolute pressure equal to the saturated vapour pressure of the liquid

pressure becomes more than critical pressure

pressure is increased

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Hydraulics and Fluid Mechanics in ME
A valve is suddenly closed in a water main in wl.ich the velocity is 1 m/sec and velocity of pressure wave is 981 m/ sec. The inertia head at the valve will be

100m

1 m

10m

None of these

100m

1 m

10m

None of these

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Hydraulics and Fluid Mechanics in ME
The efficiency of a Pelton wheel working under constant head ________ with the increase in power.

Decreases

Increases

Remain same

None of these

Decreases

Increases

Remain same

None of these

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Hydraulics and Fluid Mechanics in ME
The centre of gravity of the volume of the liquid displaced is called

Centre of pressure

Centre of buoyancy

Metacentre

None of the listed here

Centre of pressure

Centre of buoyancy

Metacentre

None of the listed here

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Hydraulics and Fluid Mechanics in ME
The pressure measured with the help of a Piezometer tube is in

Head of liquid

All of these

N/m2

N/mm2

Head of liquid

All of these

N/m2

N/mm2

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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME If a pump is handling water and is discharging a certain flow Q at a constant total dynamic head requiring a definite B.H.P., the same pump when handling a liquid of specific gravity 0.75 and viscosity nearly same as of water would discharge

Hydraulics and Fluid Mechanics in ME Cavitation will begin when

Hydraulics and Fluid Mechanics in ME A valve is suddenly closed in a water main in wl.ich the velocity is 1 m/sec and velocity of pressure wave is 981 m/ sec. The inertia head at the valve will be

Hydraulics and Fluid Mechanics in ME The efficiency of a Pelton wheel working under constant head ________ with the increase in power.

Hydraulics and Fluid Mechanics in ME The centre of gravity of the volume of the liquid displaced is called

Hydraulics and Fluid Mechanics in ME The pressure measured with the help of a Piezometer tube is in

Hydraulics and Fluid Mechanics in ME
If a pump is handling water and is discharging a certain flow Q at a constant total dynamic head requiring a definite B.H.P., the same pump when handling a liquid of specific gravity 0.75 and viscosity nearly same as of water would discharge

Hydraulics and Fluid Mechanics in ME
Cavitation will begin when

Hydraulics and Fluid Mechanics in ME
A valve is suddenly closed in a water main in wl.ich the velocity is 1 m/sec and velocity of pressure wave is 981 m/ sec. The inertia head at the valve will be

Hydraulics and Fluid Mechanics in ME
The efficiency of a Pelton wheel working under constant head ________ with the increase in power.

Hydraulics and Fluid Mechanics in ME
The centre of gravity of the volume of the liquid displaced is called

Hydraulics and Fluid Mechanics in ME
The pressure measured with the help of a Piezometer tube is in