Engineering Questions with Answers - Multiple Choice Questions

# MCQs on Model Analysis

1 - Question

What is a model analysis?
a) A small-scale replica
b) Actual structure
c) Theory structure.

a
Explanation: Model analysis is defined as a small-scale replica of the actual structure. Model analysis need not be smaller all the time. They can even be larger than the prototype.

2 - Question

What is a prototype?
a) A small-scale replica
b) Actual structure
c) Theory structure.

b
Explanation: Prototype is the actual structure that needs to be constructed. For a better understanding of the model, we prepare a model analysis. They can even be larger than the prototype.

3 - Question

Advantage of a model analysis is_________
a) Performance cannot be predicted
b) The relationships between the variable cannot be obtained
c) Shear stress to thermal diffusivity
d) Alternative designs can be predicted

d
Explanation: One of the major advantages of the model analysis is that we can predict the alternative designs. It can also predict the performance of the machine in advance.

4 - Question

Why do we need a model analysis?
a) For determining the dimensions
b) To provide a safe design
c) To check the shear stress
d) To check the thermal diffusivity

b
Explanation: One of the major advantages of the model analysis is that we can predict the alternative designs. It provides the safest design in the most economical way.

5 - Question

The similarity between the motion of model and prototype is_________
a) Dynamic similarity
b) Potential similarity
c) Kinematic similarity
d) Design similarity

c
Explanation: Kinematic similarity is defined as the similarity between motion of the model and the prototype. It exists in between the model and prototype. The points in the model and prototype are of the same magnitude.

6 - Question

The similarity between the forces of model and prototype is ________
a) Dynamic similarity
b) Potential similarity
c) Kinematic similarity
d) Design similarity

a
Explanation: Dynamic similarity is defined as the similarity between forces of a model and the prototype. It exists in between the model and prototype. The points in the model and prototype are of the same magnitude.

7 - Question

Which among these forces does not act in a moving fluid?
a) Inertial force
b) Viscous force
c) Gravity force
d) Drag

d
Explanation: Drag does not take place in moving fluids. Moving fluids are restricted by a viscous force and move along an inertial force. The gravitational force tends to act perpendicular to the fluid surface.

8 - Question

What is the formula for elastic force?
a) Elastic stress/area
b) Elastic strain/area
c) Elastic stress*area
d) Elastics stress* Elastic strain

c
Explanation: Elastic force is a force that is developed by a material to retain to its original position. It regains its shape after a period of time. When an elastic material is compressed or stretched, it develops an elastic force.

9 - Question

For a dynamic similarity between a model and a prototype, the ratio of their forces in the model and the prototype must be equal.
a) True
b) False