Technician A says a pressure switch is used to monitor precise pressures. Technician B says if voltage is not present to the oil pressure switch with the ignition in the RUN position, the warning lamp bulb may be burned out. Who is correct?
A) Technician A only
B) Technician B only
C) Both Technician A and B
D) Neither Technician A nor B

Question

Quizplus · Accepted Answer

Technician A is not entirely correct as a pressure switch can also be used to turn on or off a system or component at a set pressure level. 
Technician B is correct as the warning lamp bulb requires voltage to illuminate, and if the bulb is burned out, voltage will not be present at the oil pressure switch.

Technician a Says a Pressure Switch Is Used to Monitor