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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Rain drops are spherical because of

air resistance
surface tension forces
atmospheric pressure
viscosity

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Hydraulics and Fluid Mechanics in ME
A flow in which the viscosity of fluid is dominating over the inertia force is called

Steady flow
Turbulent flow
Laminar flow
Unsteady flow

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Hydraulics and Fluid Mechanics in ME
Centrifugal pump is started with its delivery valve

Irrespective of any position
Kept 50% open
Kept fully closed
Kept fully open

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Hydraulics and Fluid Mechanics in ME
A rectangular block 2 m long, 1 m wide and 1 m deep floats in water, the depth of immersion being 0.5 m. If water weighs 10 kN/m3, then the weight of the block is

lOkN
15 kN
5kN
20 kN

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Hydraulics and Fluid Mechanics in ME
The velocity at which the flow changes from laminar flow to turbulent flow is called

Critical velocity
Sub-sonic velocity
Super-sonic velocity
Velocity of approach

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Hydraulics and Fluid Mechanics in ME
If a body floating in a liquid returns back to its original position, when given a small angular displacement, the body is said to be in

None of these
Unstable equilibrium
Neutral equilibrium
Stable equilibrium

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