Engine 2014: Electricity

1. A First, the motor must be stopped via the stop button, then normally closed 'F' contacts must re- close, and finally the reverse start button must be depressed.
2. B First, the motor must be stopped via the stop button, then normally closed 'F' contacts must re-open, and finally the reverse start button must be depressed.
3. C First, the motor must be stopped via the stop button, then normally open 'F' contacts must re-close, and finally the reverse start button must be depressed.
4. D First, the motor must be stopped via the stop button, then normally open 'F' contacts must re-open, and finally the reverse start button must be depressed.

Tip: press A-D to answer