Fluid Mechanics MCQ Questions & Answers

1

The bulk modulus of elasticity of a liquid

A) Is zero for incompressible liquid B) Decreases with pressure C) Is independent of temperature & pressure D) Increases with pressure

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

2

For the transfer of solution of thick slurry, the pump used is a __________ pump.

A) Reciprocating B) Gear C) Diaphragm D) Centrifugal

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

3

Consider a centrifugal pump having a specific impeller diameter, fixed impeller speed pumping a liquid of constant density at a particular discharge capacity. With decrease in the capacity of the pump, the __________ decreases.

A) NPSH required B) BHP required by the pump C) Head of the liquid pumped D) All of the above

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

4

In laminar flow through a round tube, the discharge varies

A) Linearly as the viscosity B) Inversely as the pressure drop C) Inversely as the viscosity D) As the square of the radius

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

5

What is the ratio of displacement thickness to nominal thickness for a linear distribution of velocity in the boundary layer on a flat plate?

A) 0.5 B) 1 C) 1.5 D) 2

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

6

The hydrodynamic and thermal boundary layers will merge, when

A) Prandtl number is one B) Schmidt number tends to infinity C) Nusselt number tends to infinity D) Archimedes number is greater than 10000

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

7

Unit of mass velocity is

A) Kg/hr B) Kg/m².hr C) Kg/m² D) Kg/m³.hr

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

8

Scale up of agitator design requires

A) Geometrical similarity only B) Dynamic similarity only C) Both geometrical and dynamic similarity D) All of the above

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

9

A centrifugal pump is called a turbine pump, if it is having a

A) Turbine type impeller B) Vaned diffusion casing C) Rotating vaned volute D) None of these

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

10

The head loss in turbulent flow in a pipe varies

A) As velocity B) As (velocity)² C) Inversely as the square of diameter D) Inversely as the velocity

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Fluid Mechanics MCQ Questions & Answers | Chemical Engineering