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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The discharge through a reaction turbine ___ with the increase in unit speed.

Remain same
Decreases
Increases
None of the listed here

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Hydraulics and Fluid Mechanics in ME
The distance y from pipe boundary, at which the point velocity is equal to average velocity for turbulent flow, is (where R is radius of pipe)

0.423 R
0.223 R
0.577 R
0.707 R

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Hydraulics and Fluid Mechanics in ME
The divergent portion of a Venturimeter is made longer than convergent portion in order to

Both (A) and (B)
To minimize frictional losses
Avoid the tendency of breaking away the stream of liquid
None of these

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Hydraulics and Fluid Mechanics in ME
For a perfect incompressible liquid, flowing in a continuous stream, the total energy of a particle remains the same, while the particle moves from one point to another. This statement is called

Bernoulli’s equation
Pascal’s law
Continuity equation
Archimedes’s principle

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Hydraulics and Fluid Mechanics in ME
Which of the following pump is generally used to pump highly viscous fluid?

Screw pump
Centrifugal pump
Air lift pump
Reciprocating pump

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Hydraulics and Fluid Mechanics in ME
The unit speed of the turbine runner is

N/H²
N/√H
N/H3/2
N/H

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