8-12.
8-13.
8-14.
8-15.
8-16.
8-17.
8-18.
Heat is less damaging to cotton
than it is to synthetic fibers.
1.
True
2.
False
At approximately 700°F, Nomex
fabric will begin to do which of
the following’?
1.
Burn
2.
Melt
3.
Char
4.
Disintegrate
Webbings are
that is less
from selvage
edge?
1.
6
2.
8
3.
10
4.
12
defined as material
than how many inches
edge to selvage
Textile tapes can weigh up to how
many ounces per square yard?
1.
3
2.
10
3.
15
4.
20
Depending on the project, e
right- or left-twist thread
be used on a sewing machine
1.
True
2.
False
8-19.
8-20.
8-21.
ither
can
8-22.
Learning Objective:
Discuss
characteristics? specifications,
and care of fabrics.
An ideal storage area for textile
material would be dry and out of
direct sunlight, with a
temperature of how many degrees?
1.
50°F
2.
60°F
3.
70°F
4.
80°F
Exposure to which of the
following elements would cause
the most serious damage to nylon
material?
1.
Mildew
2.
Direct sunlight
3.
Fresh water
4.
Salt water
8-23.
8-24.
Which of the following factors
is/are affected by the air
permeability in a parachute
assembly?
1.
Opening time
2.
Opening force
3.
Stability
4.
All of the above
A length of nylon cord, which is
100 feet long and has an
elongation of 10%, can be
stretched to what maximum
distance without breaking?
1.
110 ft
2.
120 ft
3.
130 ft
4.
140 ft
What does the term “moisture
regain” mean when referring to
fibers?
1.
The percentage of static
electricity it absorbs from
the air
2.
The percentage of moisture it
absorbs from the air
3.
The percentage of static
electricity it repels
4.
The percentage of moisture it
repels
Military specifications for
parachute materials require that,
after 50 hours of exposure to
sunlight, parachute fabrics
should not lose more than what
percent of its original strength?
1.
10%
20%
2.
25%
3.
4.
50%
What percentage can nylon be
stretched without being damaged?
1.
5 to 25%
2.
10 to 20%
3.
15 to 30%
4.
18 to 40%
What is the percentage of
elasticity in nylon?
1.
70%
2.
75%
3.
80%
4.
100%
45
