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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
The difference of pressure between the inside and outside of a liquid drop is

p = T/2r
(a)p = Txr
(b)p = T/r
(d)p = 2T/r

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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

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

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Hydraulics & Fluid Mechanics
Ay between two stream lines represents

pressure
velocity
head
discharge

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Hydraulics & Fluid Mechanics
Free surface of a liquid tends to contract to the smallest possible area due to force of

viscosity
friction
surface tension
cohesion

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Hydraulics & Fluid Mechanics
A perfect gas

is incompressible
is of theoretical interest
has constant viscosity
None of these

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

1.01
0.611
0.95
0.86

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