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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
THE THEORETICAL VALUE OF COEFFICIENT OF CONTRACTION OF A SHARP EDGED ORIFICE IS

0.95
0.611
0.86
1.01

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Hydraulics & Fluid Mechanics
The resultant of all normal pressures acts

at e.g. of body
vertically upwards
at metacentre
at center of pressure

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Hydraulics & Fluid Mechanics
The units of viscosity are

metre2/se
newton-sec/metre2
newton-sec/metre
kg sec/metre

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Hydraulics & Fluid Mechanics
SURFACE TENSION HAS THE UNITS OF

NEWTONS/M
NEW TONS/M
NETON/M
NEWTONS

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Hydraulics & Fluid Mechanics
At the centre line of a pipe flowing under pressure where the velocity gradient is zero, the shear stress will be

maximum
could be any value
negative value
minimum

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Hydraulics & Fluid Mechanics
THEE HORIZONTAL COMPONENT OF BUOYANT FORCE IS

SAME AS BUOYANT FORCE
ZERO
NEGLIGIBLE
None of these

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