Isometric Projection MCQs : Here you will find MCQ Questions related to "Isometric Projection" in Engineering Drawing. These Isometric Projection MCQ Questions Will help you to improve your Engineering Drawing knowledge and will prepare you for various Examinations like Competitive Exams, Placements, Interviews and other Entrance Exmaniations
Question 1
Isometric drawing is a form of ______ drawing.
A. 1D
B. 2D
C. 3D
D. 4D
View Answer
Ans : C
Explanation: Isometric drawing is a form of 3D drawing
Question 2
Isometric drawing is set out using __________ angle.
A. 30 degree
B. 45 degree
C. 60 degree
D. 90 degree
View Answer
Ans : A
Explanation: Isometric drawing is a form of 3D drawing, which is set out using 30-degree angles. It is a type of axonometric drawing so the same scale is used for every axis, resulting in a non-distorted image.
Question 3
An isometric drawing is a 3D representation of an object, room, building or design on a _______ surface
A. 1D
B. 2D
C. 3D
D. All of the above
View Answer
Ans : B
Explanation: An isometric drawing is a 3D representation of an object, room, building or design on a 2D surface. One of the defining characteristics of an isometric drawing, compared to other types of 3D representation, is that the final image is not distorted.
Question 4
The angle between the isometric axes is __________
A. 30 degrees
B. 60 degrees
C. 90 degrees
D. 120 degrees
View Answer
Ans : D
Explanation: Isometric projection is a type of projection in which the three dimensions of a solid are not only shown in one view but also their actual sizes can be measured directly from it. So it is needed that there exist equal angle between the axes for easy measurement so 360/3=120 degrees is chosen.
Question 5
If an isometric projection is drawn with true measurements but not with isometric scale then the drawings are called ____________
A. Isometric projection
B. Isometric view
C. Isometric perception
D. Orthographic view
View Answer
Ans : B
Explanation: Due to the ease of construction and the advantage of measuring the dimensions directly from the drawing, it has become a general practice to use the true scale instead of the isometric scale
Question 6
Isometric drawings differ from other types of axonometric drawing, including dimetric and trimetric projections.
A. TRUE
B. FALSE
C. Can be true or false
D. Can not say
View Answer
Ans : A
Explanation: True, Isometric drawings differ from other types of axonometric drawing, including dimetric and trimetric projections
Question 7
Front view of the square is given and has to draw its isometric view which angle the vertical edge has to make with horizontal?
A. 45 degree
B. 60 degrees
C. 75 degrees
D. 90 degrees
View Answer
Ans : D
Explanation: In isometric view vertical lines exist and make 90 degrees with the horizontal so if the front view of a square is given and drawn to isometric view the angle between the vertical edge and horizontal is 90 degrees
Question 8
Both isometric drawings and one-point perspective drawings use __________ to present 3D representations on 2D surfaces
A. geometry
B. mathematics
C. Both A and B
D. None of the above
View Answer
Ans : C
Explanation: Both isometric drawings and one-point perspective drawings use geometry and mathematics to present 3D representations on 2D surfaces
Question 9
The planes parallel to any of the two isometric lines are called ________ planes.
A. parallel
B. auxiliary
C. isometric
D. oblique
View Answer
Ans : C
Explanation: The planes on which the faces of cube lie if it is placed in isometric view can be consider as the isometric planes which are parallel to two axes of isometric view which are x, y, z axes of isometric view
Question 10
Isometric view of cube is drawn the angle between the edge of cube and vertical will be______
A. 30 degrees
B. 15 degrees
C. 120 degrees
D. 60 degrees
View Answer
Ans : D
Explanation: Isometric view of cube is drawn the angle between the edge of cube and vertical will be 60 degrees because the angle between the edge and horizontal is 30 and so angle between vertical and horizontal is 90. 90 – 30 = 60 degrees.