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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Which of the following pump is successfully used for lifting water to the boilers?

Airlift pump
Jet pump
Centrifugal pump
Reciprocating pump

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Hydraulics and Fluid Mechanics in ME
Density of water is maximum at

4°C
100°C
0°K
0°C

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Hydraulics and Fluid Mechanics in ME
The maximum efficiency of transmission through a pipe is

0.6667
0.5
0.567
0.7666

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Hydraulics and Fluid Mechanics in ME
Hydraulic accumulator is used for

Accumulating oil
Supplying large quantities of oil for very short duration
Supplying energy when main supply fails
Generally high pressures to operate hydraulic machines

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Hydraulics and Fluid Mechanics in ME
High specific speed of a pump implies it is

Centrifugal pump
Mixed flow pump
Axial flow pump
Any one of the above

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Hydraulics and Fluid Mechanics in ME
Which of the following statement is correct as regard to water wheels?

All of these
They have slow speeds
They give constant efficiency, even if the discharge is not constant
They are suitable even for low water heads

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