| In the system shown in the illustration, the engine room station is unable to signal any other station, nor is any other station able to signal the engine room station. The engine room station can, however, ring itself by proper positioning of its selector switch. What is the most probable cause of this problem? Illustration EL-0093 |
| A) The coil of component "C" of the problem station is open circuited. |
| B) The selector switch is grounded at the problem station diverting current from the other stations' ringing devices. |
| C) The switch at component "A" of the problem station is stuck open. |
| 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. |
