Engineering Questions with Answers - Multiple Choice Questions
MCQs on Similitude – Types of Similarities
1 - Question
Similitude is a concept applicable to the testing of _________
a) Mathematical models
b) Physical models
c) Engineering models
d) Chemical models
View Answer
c
Explanation: Similitude is an essential concept that is applicable to the testing of basic engineering models. A model has a similitude with a real-time application. It shares the same geometry. Similarity and similitude are interchangeable at times.
2 - Question
Which among the following is the main application for Similitude?
a) Ships
b) Cars
c) Hydraulics
d) Train
View Answer
c
Explanation: Similitude plays an important role in various applications. One of the major applications are hydraulics and aerospace engineering. Its main purpose is to test the fluid flow at different conditions of scaled model.
3 - Question
Which among the following is not a criteria to achieve similitude?
a) Geometric similarity
b) Kinematic similarity
c) Dynamic similarity
d) Conditional similarity
View Answer
d
Explanation: The criteria required to achieve similitude are geometric similarity, kinematic similarity and dynamic similarity. All these similarities play a major role in regard with the real-time applications. Similarity and similitude are interchangeable at times.
4 - Question
A model of with same shape is__________
a) Geometric similarity
b) Kinematic similarity
c) Dynamic similarity
d) Conditional similarity
View Answer
a
Explanation: Geometric similarity is a similarity that follows a real-time application. It is model that has the same shape for any sort of application. It is measured in scaled quantities.
5 - Question
Which among the following have similar fluid streamlines?
a) Geometric similarity
b) Kinematic similarity
c) Dynamic similarity
d) Conditional similarity
View Answer
b
Explanation: In kinematic similarity, fluid flow of model and real-time application takes place. Here, the model and the real application must undergo similar time rates in motion changes. Thus, it has similar fluid streamlines.
6 - Question
Which among the following have the same forces acting on them?
a) Geometric similarity
b) Kinematic similarity
c) Dynamic similarity
d) Conditional similarity
View Answer
c
Explanation: Dynamic similarities have the same forces acting on them. That means, the ratios of all the forces acting on the fluid particles are constant. Also, the ratio of the forces acting on the boundary surfaces are also a constant.
7 - Question
All the parameters in a similitude are described using_________
a) Continuum mechanics
b) Solid mechanics
c) Diesel mechanics
d) Aircraft mechanics
View Answer
a
Explanation: A branch of mechanics that deals with the analysis of mechanical behaviour of materials and kinematics of materials. They are used for modelling purposes. It is modelled in continuous mass.
8 - Question
Physical similitude has exactly the same geometric shape of the prototype.
a) True
b) False
View Answer
a
Explanation: Physical similitude is also called the similitude of shape. It is for modelling the same geometric shape as that of its prototype. Which means, that the shape will have to be divided by a scale factor.
9 - Question
Which among the following is a standard scale for a similitude?
a) 1:250
b) 1:50
c) 1:25
d) 1:100
View Answer
c
Explanation: To design a similitude with a specific dimension, we must fix a scale. The standard system has fixed the scale as 1:25. This was fixed for an uniformity in dimensions.
10 - Question
In similitude, Fapplication=Fmodel*3.44
a) True
b) False
View Answer
a
Explanation: A model test was conducted to determine this relation. The force and velocity that were measured in the model are to be scaled. This helps to find the force that can be expected for a real-time application.