# Fluid Mechanics MCQ Questions Answers Mechanical Engineering

## Fluid Mechanics MCQ Questions Answers – Mechanical Engineering

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