D72 FACE THE CHALLENGE

Which instrument is used to transfer dimensions from one part of drawing to another?

• Divider
• Compass
• Scale
• Set square

Answer explanation

Dividers are used for transferring or comparing dimensions.

Which attachment in a compass allows interchangeable use?

• Socket
• Needle
• Lead sleeve
• Protractor head

Answer explanation

One leg of compass has a socket for interchangeable attachments.

Which operation is done with dividers in scaling?

• Drawing circles
• Setting dimensions from scale
• Drawing straight lines
• Measuring angles

Answer explanation

Dividers are used to set dimensions from scale to drawing.

Which pencil grade indicates the softest lead?

• H
• 2H
• B
• 2B

Answer explanation

Higher B grades indicate softer leads.

What is the advantage of clutch pencils over wooden pencils?

• Cheaper only
• No sharpening required
• Produce darker lines
• Cannot break

Answer explanation

Clutch pencils do not require sharpening and are long-lasting.

In drafting, only a ____ pencil can make quality drawings.

• Soft
• Blunt
• Sharp
• Round

Answer explanation

A sharp pencil is essential for neat, quality drawings.

Which method of plane tabling requires at least two known points?

• Radiation
• Resection

• Traversing
• Intersection

Answer explanation

Two-point problem uses two known points already plotted.

In plane tabling, the three-point problem involves:

• 1 object
• 2 objects
• 3 objects
• 4 objects

Answer explanation

Three-point problem requires three known objects.

Graphical (Bessel’s) method is used to solve:

• Two-point problem
• Three-point problem
• Radiation
• Traversing

Answer explanation

Graphical (Bessel’s) method solves the three-point problem.

In triangulation survey, the shape of triangle preferred is:

• Right angled
• Equilateral
• Isosceles
• Obtuse angled

Answer explanation

Equilateral triangles are best suited to minimize errors.