Normally open and normally closed mean that the contacts are____________ .
A)subject to external forces
B)subject to mechanical forces
C)in a rest position
D)held by surface tension

Question

Quizplus · Accepted Answer

Normally open and normally closed refer to the rest position of the contacts in a switch or relay. Normally open contacts are in an open position (not touching) when the switch or relay is not activated, while normally closed contacts are in a closed position (touching) when the switch or relay is not activated. Therefore, the answer is C - in a rest position. Normally open (NO) and normally closed (NC) refer to the rest position of the contacts in a switch or relay. Normally open contacts are in an open position when the switch or relay is not activated, while normally closed contacts are in a closed position when the switch or relay is not activated. Therefore, the best choice is C, as the contacts are in a rest position.

Normally Open and Normally Closed Mean That the Contacts Are____________