Fluid Mechanics MCQs

Square of the radial distance

Radial distance linearly

Inverse of the radial distance

Elevation along vertical direction

In the zone of complete turbulence

When the roughness projections are much smaller than the thickness of the laminar film

Everywhere in the transition zone

When the friction factor is independent of the Reynold’s number

ML⁻²

MT⁻²

MLT⁻²

ML⁻²T

Cavitation

Low speed of impeller

Its operation with delivery valve closed for considerable time after starting the pump

Off centering of pump with motor

Less than

More than

Same as

None of these

Cv . √(2gH)

Cc . √(2gH)

Cd . √(2gH)

Cv . Va

Directly proportional to

Directly proportional to square of

Inversely proportional to

Inversely proportional to square of

Signifies absence of density

Can resist shearing action

Is incompressible

Is a supercritical vapor

Increases

Decreases

Remains unchanged

Data insufficient to predict

Length is shorter

Throat diameter is more

Sudden expansion of flow in the downstream occurs

Distance between the throat and the inlet is more