Engineering Questions with Answers - Multiple Choice Questions

# MCQs on Types of Motion and Vortex Flow

1 - Question

When fluid element moves from one position to another, what type of motion is it?
a) Linear Translation
b) Linear Deformation
c) Angular Deformation
d) Rotation

2 - Question

When fluid element moves from one position to another and it undergoes c hange in its dimensions, what type of motion is it?
a) Linear Translation
b) Linear Deformation
c) Angular Deformation
d) Rotation

b
Explanation: As per the definition, bodily movement of fluid element causing it to change its dimension is linear deformation.

3 - Question

If there is change in angle contained by two sides. the average of the angle is
a) Linear Translation
b) Linear Deformation
c) Angular Deformation
d) Rotation

c
Explanation: As per the definition, the sum average of two angles is magnitude of angular deformation.

4 - Question

What is the magnitude of vorticity?
a) Twice of angular rotation
b) Thrice of angular rotation
c) Two and half times of angular rotation
d) Same as angular rotation

a
Explanation: It is the mathematical relation between the two.

5 - Question

The flow of fluid along curvilinear or curved path is known as
a) Curvilinear Flow
b) Circular Flow
c) Sink Flow
d) Vortex Flow

d
Explanation: The flow of fluid along curvilinear or curved path is known as Vortex flow.

6 - Question

When external torque is absent the type of vortex flow is
a) Circular vortex flow
b) Independent vortex flow
c) Free vortex flow
d) None of the mentioned

c
Explanation: Free vortex flow is due to the absence of any external force.

7 - Question

Which of the following is not an example of forced vortex flow?
a) Liquid contained in cylinder rotated about its axis
b) Flow of liquid inside impeller of a centrifugal pump
c) Flow of a water through runner of a turbine
d) Flow of the liquid around a circular bend in a pipe

d
Explanation: Flow of the liquid around a circular bend in a pipe is an example of free vortex flow.

8 - Question

Which of the following is not an example of free vortex flow?
a) Flow of a water through runner of a turbine
b) Flow of liquid through a hole provided at the bottom
c) A whirlpool in a river
d) Flow of the liquid around a circular bend in a pipe

a
Explanation: Flow of a water through runner of a turbine is an example of forced vortex flow.

9 - Question

Equation of motion for vortex flow does not take into account centrifugal force?
a) True
b) False

b
Explanation: Equation of motion for vortex flow does take into account centrifugal force.

10 - Question

Equation of motion for vortex flow does take into account shear force
a) True
b) False