In a single casing, multistage pump running at constant speed, the capacity rating is to be slightly lowered. It can be done by

Hydraulics and Fluid Mechanics in ME
In a single casing, multistage pump running at constant speed, the capacity rating is to be slightly lowered. It can be done by

Some other alterations in the impeller

Not possible

Trimming the impeller size to the required size by machining

Designing new impeller

Some other alterations in the impeller

Not possible

Trimming the impeller size to the required size by machining

Designing new impeller

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Hydraulics and Fluid Mechanics in ME
The total energy line lies over the centre line of the pipe by an amount equal to

Pressure head

Velocity head

Pressure head + velocity head

Pressure head - velocity head

Pressure head

Velocity head

Pressure head + velocity head

Pressure head - velocity head

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Hydraulics and Fluid Mechanics in ME
The water in a jet propelled boat is drawn through the openings facing the direction of motion of the boat. The efficiency of propulsion is given by

2V/(vr - v)

V/(vr - v)

V/(vr + v)

2V/(vr + v)

2V/(vr - v)

V/(vr - v)

V/(vr + v)

2V/(vr + v)

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Hydraulics and Fluid Mechanics in ME
The length of the divergent cone in a Venturimeter is __________ that of the convergent cone.

Double

Three to four times

Five to six times

Equal to

Double

Three to four times

Five to six times

Equal to

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

0.6

0.5

0.4

0.8

0.6

0.5

0.4

0.8

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Hydraulics and Fluid Mechanics in ME
The force exerted (in Newton) by a jet of water impinging normally on a fixed plate is (where w = Specific weight of water in N/m3, a = Cross-sectional area of jet in m², and V = Velocity of jet in m/s)

waV² / 2g

waV² / g

waV / 2g

waV / g

waV² / 2g

waV² / g

waV / 2g

waV / g

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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME In a single casing, multistage pump running at constant speed, the capacity rating is to be slightly lowered. It can be done by

Hydraulics and Fluid Mechanics in ME The total energy line lies over the centre line of the pipe by an amount equal to

Hydraulics and Fluid Mechanics in ME The water in a jet propelled boat is drawn through the openings facing the direction of motion of the boat. The efficiency of propulsion is given by

Hydraulics and Fluid Mechanics in ME The length of the divergent cone in a Venturimeter is __________ that of the convergent cone.

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

Hydraulics and Fluid Mechanics in ME The force exerted (in Newton) by a jet of water impinging normally on a fixed plate is (where w = Specific weight of water in N/m3, a = Cross-sectional area of jet in m², and V = Velocity of jet in m/s)

Hydraulics and Fluid Mechanics in ME
In a single casing, multistage pump running at constant speed, the capacity rating is to be slightly lowered. It can be done by

Hydraulics and Fluid Mechanics in ME
The total energy line lies over the centre line of the pipe by an amount equal to

Hydraulics and Fluid Mechanics in ME
The water in a jet propelled boat is drawn through the openings facing the direction of motion of the boat. The efficiency of propulsion is given by

Hydraulics and Fluid Mechanics in ME
The length of the divergent cone in a Venturimeter is __________ that of the convergent cone.

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

Hydraulics and Fluid Mechanics in ME
The force exerted (in Newton) by a jet of water impinging normally on a fixed plate is (where w = Specific weight of water in N/m3, a = Cross-sectional area of jet in m², and V = Velocity of jet in m/s)