Question 322Electricity & Electronics - QMED

The correct answer is D) There is an open between terminal "C" of the problem station and the common wire of the multi-conductor cable to the other stations. This is the correct answer because if there is an open between terminal "C" of the problem station and the common wire, it would prevent any signaling from the other stations from reaching the engine room station. However, the engine room station would still be able to ring itself by positioning the selector switch properly, since that would complete the circuit within the station. The other answer choices are incorrect because they would either prevent all signaling (A and C) or cause a ground fault (B), which would not match the symptoms described in the question.