Question 232Electricity & Electronics - 1st Asst/Chief

70% to pass

Referring to figure "B" of the illustrated control circuit schematic diagram, which of the following statements is true when the motor is running in the forward direction? Illustration EL-0011

Diagram for USCG Electrical Chief: Referring to figure "B" of the illustrated control circuit schematic diagram,...
AThe normally open (NO) "F" contacts are closed.
BThe normally closed (NC) "F" contacts are closed.
CThe normally open (NO) "R" contacts are closed.
DThe normally closed (NC) "R" contacts are open.
AI Explanation

The correct answer is A) The normally open (NO) "F" contacts are closed. When the motor is running in the forward direction, the normally open "F" contacts would be closed to complete the circuit and allow current to flow to the motor. This is because the "F" contacts are associated with the forward rotation of the motor. The other answer choices are incorrect because: B) The normally closed "F" contacts would be open, not closed, when the motor is running forward. C) The normally open "R" contacts would not be closed, as they are associated with the reverse rotation of the motor. D) The normally closed "R" contacts would be open, not closed, when the motor is running forward.

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