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Past Questions and Answers

WAEC Technical Drawing Past Questions And Answers (Objective and Theory)

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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.

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