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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
The density of water is 1000 kg/m3 at

0°K
20°C
0°C
4°C

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Hydraulics & Fluid Mechanics
The distance from pipe boundary, at which the turbulent shear stress is one-third die wall shear stress, is (where R is the radius of pipe)

3/4 R
2/3 R
1/2 R
1/3 R

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Hydraulics & Fluid Mechanics
Mercury is often used in barometer because

both (B) and (C)
the height of barometer will be less
its vapour pressure is so low that it may be neglected
it is the best liquid

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Hydraulics & Fluid Mechanics
A fluid is said to be ideal, if it is

inviscous
inviscous and incompressible
incompressible
inviscous and compressible

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Hydraulics & Fluid Mechanics
Separation of flow occurs when

the boundary layer comes to rest
the pressure intensity reaches a minimum
the cross-section of a channel is reduced
All of these

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Hydraulics & Fluid Mechanics
Operation of McLeod gauge used for low pressure measurement is based on the principle of

Boyle’s law
gas law
Pascal’s law
Charle’s law

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