Fluid Mechanics - Chemical Engineering Questions and Answers

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Correction for capillary effect in manometers (used for pressure measurement) need not be applied, if diameter of the manometer tube is __________ mm.

< 4

> 4

> 12.5

< 10

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Differential manometer measures the

absolute pressure

gauge pressure

pressure difference

pressure gradient

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The pressure and power requirement of a gas fan at constant speed & capacity varies __________ the gas density.

directly as

inversely as square root of

inversely as

as square of

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Isothermal turbulent flow of a fluid results in decrease of its pressure, which depends on the

wall roughness.

Reynolds number.

both (a) & (b).

neither (a) nor (b).

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Boundary layer thickness in laminar flow over a flat plate increases as(where, d = distance from the leading edge.)

d^1/3

d²

d^2/3

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Gradually varied flow in open channel is a/an __________ flow.

steady uniform

steady non-uniform

unsteady uniform

unsteady non-uniform

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The line of action of the buoyant force acts through the

centroid of the displaced volume of fluid.

centre of gravity of a submerged body.

centroid of the volume of any floating body.

none of these.

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Cavitation in a centrifugal pump can be avoided by keeping the

inlet pressure high

outlet pressure low

inlet pressure low

outlet pressure high

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Vane anemometer

is an area meter.

is a variable head meter.

rotates an element at a speed determined by the velocity of the fluid in which the meter is immersed.

none of these.