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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
SURFACE TENSION HAS THE UNITS OF

NEWTONS/M
NETON/M
NEW TONS/M
NEWTONS

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Hydraulics & Fluid Mechanics
Which of the following is demensionless

specific gravity
specific speed
specific weight
specific volume

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Hydraulics & Fluid Mechanics
To avoid vaporisation in the pipe line, the pipe line over the ridge is laid such that it is not more than

2.4 m above the hydraulic gradient
6.4 m above the hydraulic gradient
10.0 m above the hydraulic gradient
5.0 above the hydraulic gradient

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Hydraulics & Fluid Mechanics
When a liquid rotates at a constant angular velocity about a vertical axis as a rigid body, the pressure intensity varies

inversely as the radial distance
inversely as the square of the radial distance
linearly with radial distance
as the square of the radial distance

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Hydraulics & Fluid Mechanics
In a Sutro weir, the discharge is proportional to (where H is head)

H3/2
H
H5/2
H1/2

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Hydraulics & Fluid Mechanics
Mercury is often used in barometer because

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

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