# Engineering Drawing Questions and Answers – Drawing Tools and their Uses – 3

This set of Engineering Drawing Multiple Choice Questions & Answers (MCQs) focuses on “Drawing Tools and their Uses – 3”.

1. With the use of ______________ the accuracy and the quality of the drawing comes as desired.
a) Costly instruments
c) Quality instruments
d) Complex instruments

Explanation: While we are drawing we need to use the accurate and the quality instruments for the best outcome of the drawing with the desired quality and accuracy. Hence we need a quality instrument more than the costly, complex and advanced instruments.

2. Where the T-square is made to slide on the drawing board?
a) Bottom the board
b) Ebony
c) Working edge
d) Above the board

Explanation: Where the T-square slides that should be perfectly straight. For the drawing board, the working edge is made perfectly straight to make the T-square slide.

3. Which part of the drawing board guides the T-square?
a) Bottom the board
b) Ebony
c) Working edge
d) Above the board

Explanation: For a drawing board working edge is added with the perfectly straight ebony edge to guide the T-square to slide.

4. What does the drawing board size of B3 indicate as per B.I.S., in mm?
a) 1000 X 1500
b) 500 X 700
c) 350 X 500
d) 700 x 1000

Explanation: The size of the drawing board depends on the size of the drawing paper. As per the recommendations of B.I.S, the sizes of drawing boards are standardized. B3 indicates the size of 350 X 500mm.

5. Which of the following instrument is used to draw circles with more than 150mm radius accurately?
a) Compass
b) Small bow compass
c) Lengthening bar
d) Big bow compass

Explanation: When the circle has a radius larger than 150mm, then using compass may not give the accurate drawing, hence we need to use lengthening bar.
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6. The drawing board size of B0 indicates as per B.I.S., is ___________mm.
a) 1000 X 1500
b) 500 X 700
c) 350 X 500
d) 700 x 1000

Explanation: As per the recommendations of B.I.S the sizes of drawing boards are standardized. B3 indicates the size of 1000 X 1500 mm.

7. For drawing arcs of radius less than 25mm, which of the following instrument is used?
a) Compass
b) Small bow compass
c) Big bow compass
d) Lengthening bar

Explanation: As it is not possible to draw quality circles with a radius less than 25mm using a compass, hence small bow compass.

8. As per B.I.S., size of B2 drawing board _______
a) 1000 X 1500
b) 500 X 700
c) 350 X 500
d) 700 x 1000

Explanation: The size of the drawing board depends on the size of the drawing paper. As per the recommendations of B.I.S, the sizes of drawing boards are standardized. B2 indicates the size of 500 X 700 mm.

9. The stock and the blade of the T-square are joined at ______ to each other.
a) 45o
b) 30o
c) 60o
d) 90o

Explanation: The two main parts of T-square are the stock and the blade. They are joined perpendicular to each other. T-squares are used to draw horizontal lines in the drawing.

10. Keeping one leg of the compass straight what is the maximum diameter of the circle that can be drawn?
a) 100mm
b) 120mm
c) 300mm
d) 360mm

Explanation: Compass is the drawing instrument used to draw circles and arcs. By keeping one leg with sharp-pointed end straight and the other leg can go to the extent of 120mm, hence the maximum diameter of the circle that can be drawn with the given condition is 120mm.

11. Small bow ink-pen is used to draw _______
a) Lines in ink
b) Triangles in ink
c) Big-circles in ink
d) Small circles and arcs in ink

Explanation: Small bow ink-pen is used to draw circles and arcs whose radius are small in ink. Here instead of the pencil, we use ink.

12. French curves are most importantly used to draw ______
a) Long lines
b) Triangles
c) Curves
d) Circles

Explanation: Compass can draw circles and arcs. But to draw more complex curves we use French curves, which give quality and neat continuous curves.

13. For what purpose the lead is sharpened to the conical point?
a) To draw long thin lines with uniform thickness
b) To draw long thin lines with non-uniform thickness
c) For sketch works and lettering
d) For drawing thick lines with non-uniform thickness

Explanation: While drawing sharpening the pencil and uniformity are important. Depending on the usage pencils are sharpened to different shapes. Conical point shape is used to sketch and lettering works.

14. For what purpose the lead is sharpened to chisel point?
a) To draw long thin lines with uniform thickness
b) To draw long thin lines with non-uniform thickness
c) For sketch works and lettering
d) For drawing thick lines with non-uniform thickness

Explanation: The shape of the pencil lead the pointing of the pencil changes the quality of the drawing. Depending on the usage pencils are sharpened to different shapes. Chisel point shape is used for drawing uniform thickness thin lines.

15. Which of the following cannot be drawn accurately using roll-n-draw?
a) Lines
b) Horizontal lines
c) Parallel lines
d) Continuous curves

Explanation: Roll-N-Draw is used to draw lines, parallel lines, circles, and angles. Continuous curves are drawn using French curves. Hence using roll-n-draw we cannot accurately draw continuous curves.

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