FLUID MECHANICS QUIZ

Which of the following pipe bends will incur the largest head loss ?

90° bend

45° bend

30° bend

U-bend

TRUE ANSWER : ?
YOUR ANSWER : ?

Bernoulli's equation is not applicable, when the flow is

All of these

Viscous

Incompressible

Irrotational

TRUE ANSWER : ?
YOUR ANSWER : ?

The continuity equation

None of these

Stipulates that Newton's second law of motion must be satisfied at every point in the fluid

Relates work and energy

Relates mass flow rate along a stream tube

TRUE ANSWER : ?
YOUR ANSWER : ?

Bernoull's equation does not apply to the functioning of a/an

Orificem

Pitot tube

None of these

Venturimeter

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is not a dimension-less parameter?

Specific gravity

None of these

Fanning friction factor

Euler number

TRUE ANSWER : ?
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Multistage compressors are used in industry, because they

Reduce the size requirement

Are easy to control

Reduce the cost of compressor

Resemble closely to isothermal compression

TRUE ANSWER : ?
YOUR ANSWER : ?

While starting an axial flow pump, its delivery valve should be kept

Either open or closed

Closed

None of these

Open

TRUE ANSWER : ?
YOUR ANSWER : ?

Permanent loss in a venturimeter is about __________ percent of the pressure drop in theupstream cone.

40

1

10

70

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YOUR ANSWER : ?

Which of the following is used for very accurate measurement of flow of gas at low velocity?

Rotameter

Segmental orificemeter

Pitot tube

Hot wire annemometer

TRUE ANSWER : ?
YOUR ANSWER : ?

Terminal velocity is

Attained after moving one-half of total distance

None of these

A constant velocity with no acceleration

A fluctuating velocity

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YOUR ANSWER : ?

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