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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The pressure intensity in kN/m2 (or kPa) at any point in a liquid is (where w = Specific weight of liquid, and h = Depth of liquid from the surface)

w/h
w
h/w
wh

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Hydraulics and Fluid Mechanics in ME
A hydraulic press has a ram of 15 cm diameter and plunger of 1.5 cm. It is required to lift a weight of 1 tonne. The force required on plunger is equal tc

1 kg
10 kg
1000 kg
100 kg

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Hydraulics and Fluid Mechanics in ME
In a reciprocating pump, air vessels are used to

Reduce suction head
Increase delivery head
Smoothen the flow
Reduce acceleration head

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Hydraulics and Fluid Mechanics in ME
The ratio of specific weight of a liquid to the specific weight of pure water at a standard temperature is called

Specific gravity of liquid
Compressibility of liquid
Density of liquid
Surface tension of liquid

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Hydraulics and Fluid Mechanics in ME
An error of 1% in measuring head over the apex of the notch (H) will produce an error of _________ in discharge over a triangular notch.

0.015
0.02
0.01
0.025

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Hydraulics and Fluid Mechanics in ME
The fluid forces considered in the Navier Stokes equation are

gravity, pressure and viscous
pressure, viscous and turbulent
gravity, pressure and turbulent
gravity, viscous and turbulent

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