

MCQOPTIONS
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1. |
When semaphore and warner are installed on the same post, then the stop indication is given when |
A. | Both arms are horizontal |
B. | Semaphore arm lowered but warner arm horizontal |
C. | Both semaphore and warner arms lowered |
D. | None of the above |
Answer» B. Semaphore arm lowered but warner arm horizontal | |