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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. The total pressure on the wall acts at a distance __________ from the liquid surface.

3H/4
H/3
2H/3
H/2

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Hydraulics and Fluid Mechanics in ME
The viscosity of a gas

is independent of pressure for very high pressure intensities
is independent of temperature
decreases with increase in temperature
increases with increase in temperature

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Hydraulics and Fluid Mechanics in ME
One horsepower is equal to

550 watts
75 watts
102 watts
735 watts

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Hydraulics and Fluid Mechanics in ME
The total energy line lies over the centre line of the pipe by an amount equal to

Pressure head + velocity head
Pressure head
Velocity head
Pressure head - velocity head

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Hydraulics and Fluid Mechanics in ME
The efficiency of a hydraulic press is given by (where W = Weight lifted by ram, P = Force applied on plunger, A = Area of ram, and a = Area of plunger)

(p/W) × (a/A)
(W/p) × (A/a)
(p/W) × (A/a)
(W/p) × (a/A)

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Hydraulics and Fluid Mechanics in ME
The process of diffusion of one liquid into the other through a semi-permeable membrane is called

surface tension
viscosity
osmosis
cohesion

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