WAEC Technical Drawing Past Questions And Answers (Objective and Theory)
Section A: Technical Drawing (Multiple Choice)
Question: What is the purpose of a center line in a technical drawing?
A) Indicate the midpoint
B) Highlight important features
C) Show hidden edges
D) Represent symmetry
Answer: D) Represent symmetry
Question: Which type of projection shows three views of an object simultaneously?
A) Isometric projection
B) Orthographic projection
C) Perspective projection
D) Oblique projection
Answer: B) Orthographic projection
Question: In technical drawing, what does the term “hatching” refer to?
A) Drawing parallel lines
B) Adding shading
C) Creating isometric views
D) Highlighting center lines
Answer: B) Adding shading
Question: What is the purpose of dimension lines in a technical drawing?
A) Show hidden edges
B) Indicate the midpoint
C) Specify the size of features
D) Represent symmetry
Answer: C) Specify the size of features
Question: Which instrument is used for drawing perfect circles in technical drawings?
A) T-square
B) Compass
C) Protractor
D) French curve
Answer: B) Compass
Question: What does the term “scale” refer to in technical drawing?
A) Measurement tool
B) Shading technique
C) Type of projection
D) Line thickness
Answer: A) Measurement tool
Question: Which type of line is used to represent hidden or invisible edges in a technical drawing?
A) Center line
B) Construction line
C) Hidden line
D) Dimension line
Answer: C) Hidden line
Question: What is the purpose of an auxiliary view in technical drawing?
A) Show multiple views simultaneously
B) Clarify complex features
C) Highlight center lines
D) Indicate the midpoint
Answer: B) Clarify complex features
Question: Which projection method is commonly used for architectural drawings?
A) Perspective projection
B) Oblique projection
C) Orthographic projection
D) Isometric projection
Answer: A) Perspective projection
Question: What does the term “fillet” refer to in technical drawing?
A) Curved surface
B) Sharp corner
C) Rounded interior corner
D) Hidden feature
Answer: C) Rounded interior corner
Section B: Technical Drawing (Theory)
Question: Explain the importance of using proper scale in technical drawings.
Answer: Using a proper scale ensures accurate representation of dimensions, allowing for precise communication of design details and facilitating the construction process.
Question: Describe the difference between first-angle and third-angle projection methods.
Answer: First-angle projection places the object in the first quadrant, while third-angle projection situates the object in the third quadrant. The views and orientations of the object differ accordingly.
Question: Discuss the role of isometric drawings in representing three-dimensional objects.
Answer: Isometric drawings provide a realistic 3D representation of objects by maintaining equal scale along three axes, making them useful for visualizing and communicating complex structures.
Question: Explain the purpose of a section view in technical drawings.
Answer: A section view is employed to reveal internal features of an object that are not easily visible in the standard views, aiding in a more comprehensive understanding of the object’s construction.
Question: Elaborate on the significance of geometric tolerancing in technical drawings.
Answer: Geometric tolerancing specifies permissible variations in form, orientation, and location of features, ensuring that the manufactured part meets design requirements while allowing some degree of variability.
