FLUID MECHANICS QUIZ

Boundary layer separation occurs when the

Cross-section of the channel is reduced

Velocity of sound is reached

Pressure reaches a minimum

Valve is closed in a pipeline

TRUE ANSWER : ?
YOUR ANSWER : ?

Cp/Cv is termed as

Weber number

Mach number

Prandtl number

Adiabatic constant

TRUE ANSWER : ?
YOUR ANSWER : ?

For an incompressible fluid, the bulk modulus of elasticity is

∞ N/m²

1 N

0 N/m

5 kg/m³

TRUE ANSWER : ?
YOUR ANSWER : ?

Volute type of casing is provided in a centrifugal pump to

Increase the discharge

Reduce the discharge fluctuation

Convert velocity head to pressure head

Convert pressure head to velocity head

TRUE ANSWER : ?
YOUR ANSWER : ?

Rubber latex is an example of a __________ .fluid.

Dilatent

Newtonion

Bingham plastic

Pseudoplastic

TRUE ANSWER : ?
YOUR ANSWER : ?

The Prandtl mixing length is

Useful for computing laminar flow problems

Zero at the pipe wall and is a universal constant

Independent of the shear stress

Independent of radial distance from the pipe axis

TRUE ANSWER : ?
YOUR ANSWER : ?

The ratio of actual discharge to theoretical discharge through an orifice is equal to

Cc . Cv

Cd/Cv

Cc . Cd

Cv . Cd

TRUE ANSWER : ?
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 : ?

The dimension of kinematic viscosity is

None of these

ML⁻²T⁻¹

ML⁻²T⁻²

L²T⁻¹

TRUE ANSWER : ?
YOUR ANSWER : ?

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

None of these

Open

Closed

Either open or closed

TRUE ANSWER : ?
YOUR ANSWER : ?

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