This comprehensive set of MCQs on machine drawing is designed to cover all essential topics required for a thorough understanding of technical drawing and design principles. Focused on key subjects such as orthographic projection, isometric drawing, dimensioning, and assembly drawings, these MCQs are crafted to help students build a strong foundation in the skills necessary for creating accurate and effective engineering drawings.
Who should practice Machine Drawing MCQs?
- Â Students pursuing degrees in mechanical engineering, civil engineering, or related fields that emphasize technical drawing and design.
- Â Aspiring designers and engineers looking to enhance their proficiency in producing and interpreting engineering drawings.
- Individuals preparing for professional certification exams or job interviews that require knowledge of machine drawing and drafting standards.
- Anyone interested in exploring the fundamentals of technical communication through drawings and schematics.
- Candidates focused on developing critical thinking and application-based problem-solving skills specific to machine drawing challenges.
- Suitable for all learners aiming to improve their understanding of machine drawing techniques and their application in engineering and design projects.
1. What is the purpose of a machine drawing?
A) To design buildings
B) To illustrate the construction of machinery parts
C) To represent electrical circuits
D) To create artistic designs
View AnswerB
2. Which of the following types of drawings is most commonly used in machine design?
A) Perspective drawing
B) Isometric drawing
C) Orthographic projection
D) Freehand sketching
View AnswerC
3. What is the main difference between first angle and third angle projection?
A) The location of the object relative to the projection planes
B) The type of paper used
C) The scale of the drawing
D) The color of the lines
View AnswerA
4. Which of the following is a standard dimensioning practice?
A) Using vague tolerances
B) Including every minor dimension
C) Dimensioning only critical parts with clear tolerances
D) Leaving out tolerances altogether
View AnswerC
5. What does the term “tolerance” in machine drawing refer to?
A) The maximum load a machine can handle
B) The allowable variation in dimensions
C) The weight of a component
D) The color of the drawing
View AnswerB
6. In machine drawing, what does a leader line indicate?
A) Material thickness
B) Center of a circle
C) Direction of viewing
D) The connection between a feature and its dimension
View AnswerD
7. What is the function of a sectional view in a machine drawing?
A) To show the internal details of a component
B) To show a 3D view of the object
C) To highlight the color scheme
D) To represent the electrical wiring
View AnswerA
8. Which type of line is used to represent hidden features in machine drawing?
A) Continuous thick line
B) Continuous thin line
C) Dashed line
D) Dotted line
View AnswerC
9. What is the purpose of hatching in sectional views?
A) To denote dimension lines
B) To represent material type or sectioned areas
C) To indicate rotational movement
D) To show surface finish
View AnswerB
10. What does the term “BOM” stand for in machine drawings?
A) Bill of Machines
B) Basis of Manufacturing
C) Bill of Materials
D) Base of Measurements
View AnswerC
11. Which of the following elements are often included in an assembly drawing?
A) Part list, section views, and exploded views
B) Only the outline of components
C) Dimensionless sketches
D) No details of the parts used
View AnswerA
12. Which type of fit is used for components that require a press fit?
A) Loose fit
B) Clearance fit
C) Interference fit
D) Sliding fit
View AnswerC
13. What is the difference between a bolt and a screw in machine drawing?
A) A bolt requires a nut for fastening, while a screw does not
B) A screw is longer than a bolt
C) Bolts are used only in wooden structures
D) Screws are not represented in machine drawings
View AnswerA
14. In an isometric drawing, what angle is typically used for the axes?
A) 30°
B) 45°
C) 60°
D) 90°
View AnswerA
15. Which type of section is used when only a small part of the object is sectioned?
A) Full section
B) Half section
C) Offset section
D) Broken-out section
View AnswerD
16. What is meant by ‘scale’ in machine drawing?
A) The weight of the object
B) The ratio between the actual size and the drawn size
C) The surface finish of the object
D) The number of components in the drawing
View AnswerB
17. What is the purpose of a title block in machine drawing?
A) To describe the materials used
B) To provide information about the drawing, such as title, scale, and author
C) To show the assembly of parts
D) To list the dimensions of all components
View AnswerB
18. What does a reference dimension indicate?
A) A critical dimension that must be followed exactly
B) An approximate dimension for reference purposes only
C) The weight of the part
D) The tolerance range of the drawing
View AnswerB
19. What is the primary purpose of an exploded view in an assembly drawing?
A) To show the internal mechanisms
B) To illustrate the arrangement and relationship of parts
C) To display the material composition
D) To represent the machine at full scale
View AnswerB
20. Which line type is typically used for centerlines in machine drawing?
A) Continuous thick line
B) Chain line
C) Dashed line
D) Dotted thin line
View AnswerD
21. In machine drawings, which view is used to show the front of the object?
A) Plan view
B) Elevation view
C) Sectional view
D) Detail view
View AnswerB
22. What is the main purpose of using dimension tolerances in machine drawings?
A) To allow for artistic freedom
B) To ensure interchangeable parts within acceptable limits
C) To reduce the cost of the drawing
D) To create rough sketches
View AnswerB
23. In machine drawing, what does the term “datum” refer to?
A) The material of the part
B) A reference point or line from which measurements are taken
C) The weight of the object
D) The texture of the surface
View AnswerB
24. What is the purpose of an auxiliary view in machine drawing?
A) To show complex objects from a different angle
B) To remove unwanted lines from the drawing
C) To simplify the drawing
D) To improve the appearance of the drawing
View AnswerA
25. What does GD&T stand for in machine drawing?
A) General Design and Tolerances
B) Geometrical Dimensioning and Tolerancing
C) General Dimensions and Thickness
D) Guaranteed Dimensions and Tolerances
View AnswerB
26. What is the purpose of a fillet in machine design?
A) To strengthen a joint or component by rounding an interior corner
B) To add sharpness to edges
C) To increase the weight of the object
D) To simplify manufacturing
View AnswerA
27. Which symbol is used to represent surface finish in machine drawing?
A) A triangle
B) A square
C) A wavy line
D) A straight line
View AnswerA
28. Which of the following best describes an isometric view?
A) A view showing the object as it appears in perspective
B) A 2D representation of the front view
C) A 3D representation with equal scales along three axes
D) A sectional view of the internal parts
View AnswerC
29. What does a phantom line in a machine drawing indicate?
A) A solid object’s boundary
B) A temporary or alternate position of an object
C) The center of a hole
D) The axis of rotation
View AnswerB
30. What is the function of a break line in a machine drawing?
A) To indicate where an object is broken off to save space
B) To show the centerline of an object
C) To represent the surface texture
D) To dimension hidden parts
View AnswerA