8.
B.
Piston and diaphragm.
There are two types of pressure switches used in Army aircraft. (Page 52)
9.
B.
Housing, cylinder bore and piston, microswitch, spring.
The main components of a pressure switch are housing, cylinder bore and piston,
microswitch, spring. (Page 52)
10.
D.
Cracking pressure.
The cracking pressure is the pressure above normal at which the relief valve will-open.
(Page 51)
59
AL0926
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