# Fluid Mechanics MCQ Questions Answers Mechanical Engineering

## Fluid Mechanics MCQ Questions Answers – Mechanical Engineering

Fluid mechanics is a fascinating branch of physics and engineering that deals with the behavior of fluids (liquids and gases) and their interactions with forces and surfaces. It is a fundamental field that finds applications in various industries, from aerospace to civil engineering. To test your knowledge and understanding of fluid mechanics, multiple-choice questions (MCQs) are commonly used. In this article, we will explore some intriguing MCQs related to fluid mechanics and provide detailed answers to enhance your comprehension of this dynamic subject.

1) Which one of the following is an example of Bingham plastic

a) Air

b) Blood

c) Tooth paste

d) Printing ink

Option – c)

2)Property of a fluid by which its own molecules are attracted is called

(b) cohesion

(c) viscosity

(d) compressibility

(e) surface tension.

Option – b)

3) Which one of the following is correct dimension of surface tension

a) N/m2

b) J/m

c) J/m2

d) W/m

Option – c)

4)Property of a fluid by which molecules of different kinds of fluids are attracted to each other is called

(b) cohesion

(c) viscosity

(d) compressibility

(e) surface tension.

Option – a)

5) Which one of the following is defined as force per unit length

a) Surface tension

b) compressibility

c) capillarity

d) viscosity

Option – a)

6)The normal stress in a fluid will be constant in all directions at a point only if

(a) it is incompressible

(b) it has uniform viscosity

(c) it has zero viscosity

(d) it is frictionless

(e) it is at rest.

Option – e)

7) Which one of the following is a typical example of non-newtonian fluid of Pseudo plastic variety

a) Milk

b) Air

c) Water

d) Printing ink

Option – a)

8) Dynamic viscosity of most of the gases with rise in temperature

a) Increases

b) Decreases

c) Remain unaffected

d) Unpredictable

Option – a)

9) What is the dimensions of kinematic viscosity of a fluid

a) LT-2

b) L2T-1

c) ML-1T-1

d) ML-2T-2

Option – b)

10) Newton’s law of viscosity is a relationship between

a) Pressure, velocity and temperature

b) Shear stress and rate of shear strain

c) Shear stress and velocity

d) Rate of shear strain and temperature