Learning Objective:
Recognize
characteristics, uses,
construction features, and
installation procedures of
flexible hose.
2-56.
Flexible hose should be used in
locations where it will be
subjected to
1.
intense heat
2.
severe vibration
3.
excessive abrasion
4.
an oily environment
2-57.
Which of the following
information is found along the
layline of synthetic rubber hoses
having a rubber cover?
1.
Hose size
2.
Cure date
3.
Federal supply code
4.
All of the above
2-58.
The size of flexible hose is
designated In what increments
measured at what place?
1.
Thousandths of an inch,”
outside diameter,
2.
Thousandths of an inch,
inside diameter
3. Sixteenths-inch, outside,
diameter
4.
Sixteenths-inch, Inside
diameter
2-59.
The flexible hose that is inert
to all fluids presently used and
that does not absorb water is
composed of what material?
1.
PTFE
2.
Natural rubber
3.
Synthetic rubber
4.
Rubber impregnated cotton or
nylon
2-60.
You have completed fabrication of
a flexible hose assembly.
Which,
if any, of the following steps
must you NOT perform?
1.
Proof test the assembly
2.
Ensure that the hose is
compatible with system fluid
3.
Flush and dry the hose and
cap its ends
4.
None of the above
2-61.
Mark each of the following
statements about the correct
installation and use of flexible
hose as true or false, then
select the alternative below that
lists the true statements.
A. Sharp bends may reduce the
bursting pressure of the
hose
B. Supports are never required
when the hose is used.
C. The hose should be stretched
tightly between connecetions.
D. The hose should be wrapped
where necessary for
protection against chafing.
1.
A and D
2.
A and C
3.
B and D
4.
B and C
2-62.
A characteristic of flexible hose
is that under pressure it will
1.
2.
3.
4.
expand in both diameter and
length
retain its manufactured
dimensions
expand in diameter and
contract in length
contract in diameter and
expand in length
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