Technician A says a normally open switch is used in most coolant temperature warning light circuits. Technician B says most oil pressure warning circuits use a normally closed switch. 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

Both statements are correct. A normally open switch is used in most coolant temperature warning light circuits, which closes to complete the circuit when the coolant temperature exceeds a certain threshold, activating the warning light. Most oil pressure warning circuits use a normally closed switch that opens when sufficient oil pressure is present, turning off the warning light.

Technician a Says a Normally Open Switch Is Used in Most