JAMB Technical Drawing Past Questions and Answers

 

Technical Drawing questions:

 

Question: What is the purpose of an isometric projection in technical drawing?

 

A. Show the front view of an object

B. Represent a three-dimensional object on a two-dimensional plane

C. Provide detailed measurements of an object

D. Display hidden features of an object

Answer: B. Represent a three-dimensional object on a two-dimensional plane

 

Question: In technical drawing, what does the term “scale” refer to?

 

A. The hardness of pencil used

B. The ratio of drawing dimensions to actual dimensions

C. The color palette chosen

D. The type of paper used

Answer: B. The ratio of drawing dimensions to actual dimensions

 

Question: What is the purpose of using orthographic projection in engineering drawings?

 

A. Highlight specific features of an object

B. Show an object from multiple viewpoints

C. Represent a three-dimensional object on a single plane

D. Create artistic illustrations of technical concepts

Answer: C. Represent a three-dimensional object on a single plane

 

Question: What type of line is typically used to represent hidden or invisible edges in technical drawings?

 

A. Solid line

B. Dashed line

C. Zigzag line

D. Curved line

Answer: B. Dashed line

 

Question: What is the purpose of using construction lines in technical drawings?

 

A. Define the outline of an object

B. Provide a reference for drawing accurate shapes

C. Indicate hidden features

D. Enhance the final presentation of the drawing

Answer: B. Provide a reference for drawing accurate shapes

 

Question: Which type of projection is used to create a two-dimensional image of a three-dimensional object by projecting lines along the coordinate axes onto a plane?

 

A. Isometric projection

B. Oblique projection

C. Orthographic projection

D. Perspective projection

Answer: C. Orthographic projection

 

Question: What does the term “CAD” stand for in the context of technical drawing and design?

 

A. Computer-Aided Design

B. Centralized Architectural Drawing

C. Coordinated Artistic Development

D. Creative Application of Drafting

Answer: A. Computer-Aided Design

 

Question: In technical drawing, what is the purpose of a title block?

 

A. Provide information about the drawing’s creator

B. Display the drawing’s dimensions

C. Indicate the scale used in the drawing

D. Convey essential information about the drawing, such as title and project details

Answer: D. Convey essential information about the drawing, such as title and project details

 

Question: Which type of projection results in a distorted representation of an object as it appears to the human eye?

 

A. Isometric projection

B. Oblique projection

C. Orthographic projection

D. Perspective projection

Answer: D. Perspective projection

 

Question: What is the purpose of using cross-hatching in technical drawings?

 

A. Add color to the drawing

B. Create a sense of depth and dimension

C. Indicate the presence of hidden features

D. Highlight specific details

Answer: B. Create a sense of depth and dimension

 

Question: Which type of line is used to represent the outline or visible edges of an object in a technical drawing?

 

A. Construction line

B. Object line

C. Hidden line

D. Center line

Answer: B. Object line

 

Question: What does the term “tolerance” refer to in technical drawings and engineering?

 

A. Precision of measurements

B. Acceptable variation in dimensions

C. Use of specific drawing tools

D. Complexity of the drawing

Answer: B. Acceptable variation in dimensions

 

Question: What is the purpose of using arrowheads on dimension lines in technical drawings?

 

A. Indicate the direction of measurement

B. Enhance the aesthetic appeal of the drawing

C. Represent hidden features

D. Provide information about the drawing’s creator

Answer: A. Indicate the direction of measurement

 

Question: In technical drawing, what is the function of an auxiliary view?

 

A. Provide an overall perspective of the object

B. Show multiple views of an object in a single drawing

C. Represent features that are not parallel to the standard views

D. Highlight specific details using shading techniques

Answer: C. Represent features that are not parallel to the standard views

 

Question: Which type of projection involves projecting points on an object along parallel lines or at an angle to the plane of projection?

 

A. Isometric projection

B. Oblique projection

C. Orthographic projection

D. Perspective projection

Answer: B. Oblique projection

 

Question: What is the purpose of using a center line in technical drawings?

 

A. Define the outline of an object

B. Indicate hidden features

C. Provide a reference for drawing accurate shapes

D. Highlight specific details

Answer: B. Indicate hidden features

 

Question: Which type of technical drawing provides a detailed view of a specific part or assembly?

 

A. Isometric drawing

B. Assembly drawing

C. Exploded view

D. Detail drawing

Answer: D. Detail drawing

 

Question: In CAD software, what does the term “Boolean operations” refer to?

 

A. Operations involving numerical values

B. Operations on binary numbers

C. Operations based on Boolean algebra, such as union and subtraction

D. Operations with complex numbers

Answer: C. Operations based on Boolean algebra, such as union and subtraction

 

Question: What is the purpose of using a section view in technical drawings?

 

A. Provide an overall perspective of the object

B. Show multiple views of an object in a single drawing

C. Represent internal details of an object

D. Highlight specific features using shading techniques

Answer: C. Represent internal details of an object

 

Question: What is the primary function of a dimension line in technical drawings?

 

A. Indicate the direction of measurement

B. Provide information about the drawing’s creator

C. Highlight specific details using shading techniques

D. Define the outline of an object

Answer: A. Indicate the direction of measurement.