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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The specific gravity of an oil whose specific weight is 7.85 kN/m3, is

1.6
0.8
1.2
1

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Hydraulics and Fluid Mechanics in ME
Falling drops of water become spheres due to the property of

viscosity
adhesion
cohesion
surface tension

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Hydraulics and Fluid Mechanics in ME
If V1 and V2 are the velocities of water at inlet and outlet of the draft tube respectively, then the efficiency of a draft tube is

(V­1² - V2²) / V1²
(V­1 - V2) / V1
V1² / (V1² - V2²)
V1 / (V1 - V2)

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

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

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Hydraulics and Fluid Mechanics in ME
The pressure measured with the help of a pressure gauge is called

Absolute pressure
Gauge pressure
Mean pressure
Atmospheric pressure

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Hydraulics and Fluid Mechanics in ME
The viscosity of a liquid __________ its rate of flow through a hole in a vessel.

Both A and B
None of these
Does not effect
Effects

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