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Hydraulics & Fluid Mechanics

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

inviscous and incompressible
inviscous
inviscous and compressible
incompressible

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

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

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Hydraulics & Fluid Mechanics
SURFACE TENSION HAS THE UNITS OF

NETON/M
NEW TONS/M
NEWTONS
NEWTONS/M

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Hydraulics & Fluid Mechanics
If 850 kg liquid occupies volume of one cubic meter, men 0.85 represents its

specific mass
specific weight
specific gravity
specific density

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Hydraulics & Fluid Mechanics
Mercury is often used in barometer because

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

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Hydraulics & Fluid Mechanics
For a sphere of radius 15 cm moving with a uniform velocity of 2 m/sec through a liquid of specific gravity 0.9 and dynamic viscosity 0.8 poise, the Reynolds number will be

675
600
337.5
300

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