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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The shear stress-strain graph for a Newtonian fluid is a

Elliptical
Straight line
Hyperbolic curve
Parabolic curve

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Hydraulics and Fluid Mechanics in ME
When the pressure intensity at a point is more than the local atmospheric pressure, then the difference of these two pressures is called

Gauge pressure
Absolute pressure
Vacuum pressure
Positive gauge pressure

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Hydraulics and Fluid Mechanics in ME
In order to increase sensitivity of U-tube manometer, one leg is usually inclined by angle 'θ'. Sensitivity of inclined tube to sensitivity of U-tube is equal to

Cos θ
1/Sinθ
Sinθ
1/Cosθ

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Hydraulics and Fluid Mechanics in ME
The force of buoyancy is always __________ the weight of the liquid displaced by the body.

More than
None of these
Equal to
Less than

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Hydraulics and Fluid Mechanics in ME
In a depressed nappe

The pressure below the nappe is negative
The pressure above the nappe is negative
The pressure below the nappe is atmospheric
The pressure above the nappe is atmospheric

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Hydraulics and Fluid Mechanics in ME
The velocity distribution for laminar flow through a circular tube

varies linearly from zero at walls to maximum at centre
None of these
varies parabolically with maximum at the centre
is constant over the cross-section

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