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# Technical Drawing NECO exam past questions and answers

## Technical Drawing NECO exam past questions and answers

Here they are;

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

a) To show detailed views of specific components
b) To represent a three-dimensional object with equal foreshortening along each axis
c) To emphasize specific features using shading
d) To display hidden lines in a drawing
Answer: b) To represent a three-dimensional object with equal foreshortening along each axis

Question: In orthographic projection, how many standard views are typically used to represent an object?

a) Two
b) Three
c) Four
d) Five

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

a) To show the object from different angles
b) To illustrate hidden features within an object
c) To provide a detailed view of the entire object
d) To highlight surface finishes
Answer: b) To illustrate hidden features within an object

Question: Which type of line is used to represent an edge that is not visible in a drawing?

a) Centerline
b) Hidden line
c) Object line
d) Phantom line

Question: What does the term "tolerance" refer to in technical drawings?

a) The size of the drawing paper
b) Permissible variation in dimensions
c) The thickness of the drawing lines
d) The type of projection used
Answer: b) Permissible variation in dimensions

Question: In a blueprint, what does the scale ratio 1:50 indicate?

a) 1 unit on the drawing represents 50 units in reality
b) 50 units on the drawing represent 1 unit in reality
c) The drawing is 50 times larger than the actual object
d) The drawing is 50 times smaller than the actual object
Answer: a) 1 unit on the drawing represents 50 units in reality

Question: What is the purpose of a title block in a technical drawing?

a) To provide information about the drawing's scale
b) To indicate the drawing's orientation
c) To specify the materials used in the object
d) To display essential information about the drawing

Question: Which type of projection shows the object as it looks from the observer's view?

a) Orthographic projection
b) Isometric projection
c) Perspective projection
d) Oblique projection

Question: What is the purpose of hatching in a section view?

a) To add artistic elements to the drawing
b) To indicate the material of the object
c) To emphasize hidden features
d) To distinguish between different parts of the object
Answer: d) To distinguish between different parts of the object

Question: Which line type is used to represent the axis of a cylindrical object in a sectional view?

a) Centerline
b) Hidden line
c) Object line
d) Phantom line

Question: What is the purpose of a revision triangle on a technical drawing?
a) To indicate changes or revisions
b) To mark the center of the drawing
c) To highlight critical dimensions
d) To show the drawing's scale
Answer: a) To indicate changes or revisions

Question: Which symbol is used to represent a right-angle bend in a surface finish specification?
a) Phi (Φ)
b) Delta (Δ)
c) Lambda (λ)
d) Epsilon (ε)

Question: What is the purpose of an auxiliary view in technical drawing?
a) To show an object in true size and shape
b) To illustrate hidden features with foreshortening
c) To provide an enlarged view of specific details
d) To represent an object in isometric projection
Answer: c) To provide an enlarged view of specific details

Question: Which dimensioning system places dimensions in line with the dimension lines and uses extension lines to connect them?
a) Aligned dimensioning
b) Unidirectional dimensioning
c) Bilateral dimensioning
d) Ordinate dimensioning

Question: What is the purpose of a leader line in a technical drawing?
a) To indicate hidden features
b) To connect dimensions to the object
c) To emphasize the drawing's title
d) To represent the object's centerline
Answer: b) To connect dimensions to the object

Question: Which type of projection is commonly used for illustrating screw threads and fasteners?
a) Orthographic projection
b) Isometric projection
c) Oblique projection
d) Axonometric projection

Question: What does the term "GD&T" stand for in the context of technical drawing?
a) Graphic Design & Technology
b) Geometric Dimensioning and Tolerancing
c) General Drawing Techniques
d) Grid Development & Testing
Answer: b) Geometric Dimensioning and Tolerancing

Question: Which type of line is used to represent the boundary of an object in a technical drawing?
a) Centerline
b) Hidden line
c) Object line
d) Phantom line

Question: What is the purpose of a break line in a technical drawing?
a) To indicate the center of an object
b) To show the location of hidden features
c) To shorten a long, continuous object
d) To highlight critical dimensions
Answer: c) To shorten a long, continuous object

Question: In a surface finish specification, what does the symbol "Ra" represent?
a) Roughness average
b) Right angle