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
2)Property of a fluid by which its own molecules are attracted is called
(a) adhesion
(b) cohesion
(c) viscosity
(d) compressibility
(e) surface tension.
3) Which one of the following is correct dimension of surface tension
a) N/m2
b) J/m
c) J/m2
d) W/m
4)Property of a fluid by which molecules of different kinds of fluids are attracted to each other is called
(a) adhesion
(b) cohesion
(c) viscosity
(d) compressibility
(e) surface tension.
5) Which one of the following is defined as force per unit length
a) Surface tension
b) compressibility
c) capillarity
d) viscosity
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.
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
8) Dynamic viscosity of most of the gases with rise in temperature
a) Increases
b) Decreases
c) Remain unaffected
d) Unpredictable
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
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