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Hydraulics & Fluid Mechanics

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

viscosity
surface tension
friction
cohesion

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Hydraulics & Fluid Mechanics
An open vessel of water is accelerated up an inclined plane. The free water surface will

make an angle in direction of inclination of inclined plane
any one of above is possible
be horizontal
make an angle in opposite direction to inclination of inclined plane

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Hydraulics & Fluid Mechanics
The flow which neglects changes in a transverse direction is known as

steady flow
turbulent flow
uniform flow
one dimensional flow

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

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Hydraulics & Fluid Mechanics
Flow at constant rate through a tapering pipe is i) steady flow ii) uniform flow iii) unsteady flow iv) non-uniform flow The correct answer is

(ii) and (iv)
(ii) and (iii)
(i)and(iv)
(i) and (ii)

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Hydraulics & Fluid Mechanics
A large Roynold number is indication of

smooth and streamline flow
turbulent flow
LAMINAR FLOW
highly turbulent flow.

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MORE MCQ ON Hydraulics & Fluid Mechanics

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