What is used to relieve increased pressure from thermal expansion?
___ A. Pressure sequential valve.
___ B. Pressure selector valve.
___ C. Pressure relief valve.
___ D. Pressure reducer valve.
When a pressure switch senses a drop in system fluid pressure, what does the switch activate?
___ A. Warning device.
___ B. Sensing device.
___ C. Pressure device.
___ D. Sequential device.
What are the two types of pressure switches commonly used in Army aircraft?
___ A. Sensing and warning.
___ B. Piston and diaphragm.
___ C. Warning and diaphragm.
___ D. Diaphragm and sensing.
What does the piston pressure switch consist of?
___ A. Cylinder housing, bore and piston, microswitch.
___ B. Housing, cylinder bore and piston, microswitch, spring.
___ C. Piston, cylinder bore and switch spring, microswitch.
___ D. Warning device, cylinder bore and piston.
What is the term used to describe the action of fluid pressure in a valve becoming high enough
against the ball to overcome the force of the spring?
___ A. Spring pressure.
___ B. Reducing pressure.
___ C. Cylinder pressure.