Fluid Mechanics - Chemical Engineering Questions and Answers

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Surge tanks are provided in high pressure water pipelines to

Store a definte quantity ofwater all the time

Reduce the water hammer

Facilitate easy dismantling of pipeline for cleaning and maintenance

None of these

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Glass pipes can be joined by

Flanges

Welding

Soldering

Bell and spigot joint

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The maximum head that can be developed by a single impeller is __________ ft.

100

250-300

1000

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Diaphragm pumps are used to transport

Solids

Liquids

Fluids

Slurries

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Pick out the correct statement pertaining to the flow through a converging-diverging tube.

The value of Mach number is always unity at the throat

No shock wave develops in the tube when the Mach number at exit is greater than unity

Throughout the converging portion of the tube, the density increases in the downstream direction

None of these

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The discharge through a rectangular weir varies as

H^1/2

H^5/2

H^2/5

H^3/2

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The boundary layer thickness at a given section along a flat plate __________ with increasing Reynold's number.

Increases

Decreases

Remains same

May increase or decrease

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The line of action of the buoyant force passes through the centre of gravity of the

Submerged body

Displaced volume of the fluid

Volume of fluid vertically above the body

Horizontal projection of the body

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The ratio of the depth of flow to the diameter of the channel for maximum discharge in a circular channel in open channel flow is

0.1

0.55

0.95

1.85