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Fluid Mechanics

Fluid Mechanics
Ratio of inertial forces to surface tension forces is called the __________ number.

Euler
Mach
Weber
Froude

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Fluid Mechanics
In laminar flow through a round tube, the discharge varies

As the square of the radius
Linearly as the viscosity
Inversely as the pressure drop
Inversely as the viscosity

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Fluid Mechanics
Low specific speed of a pump implies that, it is a/an __________ pump.

Centrifugal
Mixed flow
Axial flow
None of these

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Fluid Mechanics
Purpose of relief valve in a reciprocating pump is to

Control the rate of discharge
Reduce the discharge pressure
Facilitate unidirectional flow of liquid
Protect the pump against developing excessive pressure

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Fluid Mechanics
The velocity profile exhibited by laminar flow of Newtonion fluids is such that the velocity distribution w.r.t. radius of the circular pipe is a/an __________ with the apex at the centre line of the pipe.

Semi-circle
Hyperbola
Semi-ellipse
Parabola

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Fluid Mechanics
A fluid is pumped at the rate of 10 lb/sec to a height of 55 ft. The horse power required is __________ hp.

5.5
1
20090
20363

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