FLUID MECHANICS QUIZ

The temperature in isentropic flow

Does not depend on Mach number

Depends on Mach number only

Cannot drop and then increase again downstream

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Fanning friction factor

None of these

Specific gravity

Euler number

TRUE ANSWER : ?
YOUR ANSWER : ?

Pressure drag does not depend upon the

Pressure of main flow only

Roughness of surface of the body

All of these

Length of the body in flow direction

TRUE ANSWER : ?
YOUR ANSWER : ?

The fluid velocity varies as the square root of the cylindrical pipe diameter in case of steady state laminar flow at constant pressure drop fo __________ fluid.

Pseudoplastic

Bingham plastic

Newtonion

Dilatant

TRUE ANSWER : ?
YOUR ANSWER : ?

Specific speed of a centrifugal pump relates it with another pump having the

Same efficiency

Same speed

Dynamic similarity

Geometrical similarity

TRUE ANSWER : ?
YOUR ANSWER : ?

In deriving Bernoulli's equation, fluid is assumed to be

None of these

Incompressible, frictionless, steady, along a streamline

Uniform, steady, incompressible, along a streamline

Steady, density being pressure dependent, frictionless

TRUE ANSWER : ?
YOUR ANSWER : ?

While starting a centrifugal pump, its delivery valve should be kept

Closed

Either opened or closed; depending on the fluid viscosity

Either opened or closed ; it does not make any difference

Opened

TRUE ANSWER : ?
YOUR ANSWER : ?

In laminar flow through a round tube, the discharge varies

Linearly as the viscosity

Inversely as the viscosity

Inversely as the pressure drop

As the square of the radius

TRUE ANSWER : ?
YOUR ANSWER : ?

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

20363

20090

1

5.5

TRUE ANSWER : ?
YOUR ANSWER : ?

Permanent pressure loss in a well designed venturimeter is about __________ percent of the venturi differential.

10

1

50

30

TRUE ANSWER : ?
YOUR ANSWER : ?