2-23.
Instead of using a T-square, some
drafters prefer a parallel
straightedge because it offers which
of the following advantages?
1.
It allows the drafter to produce
cleaner drawings
2.
It helps prevent ink blots on
small drawings
3.
It allows the drafter to work
more accurately on large drawings
4.
It helps keep drawings from
sliding off an inclined drawing
board
2-24.
What is the most desirable source of
illumination for drafting work?
1.
Direct sunlight
2.
Adjustable fluorescent table
lamps
3.
Overhead ceiling lights
4.
Natural light
2-25.
Assuming that a drafter is
right-handed, the lighting should be
from what direction?
1.
Left-front
2.
Right-front
3.
Over the right shoulder
4.
Over the left shoulder
Figure 2A
IN ANSWERING QUESTIONS 2-26 AND 2-27, REFER
TO TRIANGLES X AND Y IN FIGURE 2A.
2-26.
The size of a 30°-60° triangle (X) is
designated by the
1.
length of AB
2.
length of BC
3.
size of angle A or C
4.
perimeter of the triangle
2-27.
The size of a 45° triangle (Y) is
designated by the
1.
length of DE
2.
length of DF or EF, whichever
you prefer
3.
perimeter of the triangle
4.
size of angle D or E
2-28.
Assume that you are testing the
straightness of a 45° triangle.
The
first step you should take is to
place the triangle against a T-
square and draw a vertical line.
The next step is to take what
actions?
1.
2.
3.
4.
Rotate the triangle and draw
another vertical line, which
should coincide with the first
line
Slide the triangle to the left
(or right) and draw an
intersecting 45° line, which can
be tested for accuracy with a
protractor
Reverse the triangle and draw
another vertical line along the
same edge.
This line should
coincide with the first
Reverse the T-sauare and draw
another vertical line along the
same edge.
This line should
coincide with the first
2-29.
In which of the following ways are
circular protractors graduated?
1.
Clockwise from 0° to 90° and
180° to 270°, and
counterclockwise from 360° to
270° and 180° to 90°
2.
Clockwise and counterclockwise
from 0° to 180°
3.
Clockwise and counterclockwise
from 0° to 360°
4.
Clockwise in quadrants from 0°
to 90°
2-30.
Without estimating, what is the
minimum angle that can be set on the
adjustable triangle shown in
textbook figure 2-13?
1.
30 seconds
2.
15 seconds
3.
30 minutes
4.
1 degree
2-31.
For which of the following shapes
should you NOT use french curves?
1.
Spirals
2.
Ellipses
3.
Parabolas
4.
Circular arcs
11
