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Hydraulics and Fluid Mechanics in ME

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

V/(vr - v)
2V/(vr + v)
2V/(vr - v)
V/(vr + v)

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Hydraulics and Fluid Mechanics in ME
The unit power developed by a turbine is (where P = Power developed by the turbine under a head of water (H).

P/ √H
P/ H²
P/ H3/2
P/ H

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Hydraulics and Fluid Mechanics in ME
A flow through a long pipe at constant rate is called

Unsteady non-uniform flow
Steady non-uniform flow
Steady uniform flow
Unsteady uniform flow

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Hydraulics and Fluid Mechanics in ME
The property of a fluid which enables it to resist tensile stress is known as

cohesion
adhesion
compressibility
surface tension

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Hydraulics and Fluid Mechanics in ME
Dynamic viscosity of most of the liquids with rise in temperature

Remain unaffected
Decreases
Increases
Unpredictable

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Hydraulics and Fluid Mechanics in ME
The angle of taper on draft tube is

Less than 8°
Greater than 5°
Greater than 15°
Greater than 8°

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