Explore topic-wise MCQs in Fluid Mechanics.

This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Fluid Mechanics knowledge and support exam preparation. Choose a topic below to get started.

1.

The shear stress at a point in a liquid is found to be 0.03 N/m2. The velocity gradient at the point is 0.15 s-1. What will be it s viscosity (in Poise)?

A. 20
B. 2
C. 0.2
D. 0.5
Answer» C. 0.2
Discussion
2.

The kinematic viscosity of a fluid is 0.1 Stokes. What will be the value is m2/s?

A. 10<sup>-2</sup>
B. 10<sup>-3</sup>
C. 10<sup>-4</sup>
D. 10<sup>-5</sup>
Answer» E.
Discussion
3.

Which of the following is the dimension of kinematic viscosity?

A. [L<sup>1</sup> T<sup>-1</sup>].
B. [L<sup>1</sup> T<sup>-2</sup>].
C. [L<sup>2</sup> T<sup>-1</sup>].
D. [L<sup>2</sup> T<sup>-2</sup>].
Answer» D. [L<sup>2</sup> T<sup>-2</sup>].
Discussion
4.

Which of the following is a unit of kinematic viscosity?

A. Stokes
B. Pa-s
C. m2=s
D. Poise
Answer» B. Pa-s
Discussion
5.

Which of the following is a unit of dynamic viscosity?

A. [M<sup>1</sup> L<sup>1</sup> T<sup>-1</sup>].
B. [M<sup>1</sup> L<sup>-1</sup> T<sup>-1</sup>].
C. [M<sup>1</sup> L<sup>-2</sup> T<sup>-2</sup>].
D. [M<sup>1</sup> L<sup>-2</sup> T<sup>-2</sup>].
Answer» C. [M<sup>1</sup> L<sup>-2</sup> T<sup>-2</sup>].
Discussion
6.

The viscosity of a fluid in motion is 1 Poise. What will be it s viscosity (in Poise) when the fluid is at rest?

A. 0
B. 0.5
C. 1
D. 2
Answer» D. 2
Discussion
7.

The viscous force the relative motion between the adjacent layers of a fluid in motion.
Which one of the flowing fits best in the sentence?

A. opposes
B. never affects
C. facilitates
D. may effect under certain conditions
Answer» B. never affects
Discussion
8.

Water flows between two plates of which the upper one is stationary and the lower one is moving with a velocity V. What will be the velocity of the fluid in contact with the upper plate?

A. V
B. N 2
C. 2V
D. 0
Answer» E.
Discussion