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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Flow occurring in a pipeline when a valve is being opened is

steady
unsteady
laminar
vortex

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Hydraulics and Fluid Mechanics in ME
The atmospheric pressure with rise in altitude decreases

first steeply and then gradually
linearly
first slowly and then steeply
unpredictable

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Hydraulics and Fluid Mechanics in ME
Which of the following turbine is preferred for 0 to 25 m head of water?

Kaplan turbine
Pelton wheel
Francis turbine
None of these

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

Jet pump
Reciprocating pump
Centrifugal pump
Airlift pump

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Hydraulics and Fluid Mechanics in ME
Francis turbine is best suited for

All types of heads
Low head installation up to 30 m
Medium head application from 24 to 180 m
High head installation above 180 m

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Hydraulics and Fluid Mechanics in ME
The value of friction factor ‘f’ for smooth pipes for Reynolds number 106 is approximately equal to

0.001
0.01
0.1
0.0001

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