What does the pointer of synchroscope indicate when it is rotating in anticlockwise & clockwise direction?

Q.  What does the pointer of synchroscope indicate when it is rotating in anticlockwise direction and when it is rotating in clockwise direction?
- Published on 29 Oct 15

a. Incoming machine is running slow, incoming machine is running faster
b. Incoming machine is running faster, incoming machine is running slow
c. Pointer rotates only in clockwise direction
d. all of the above

ANSWER: Incoming machine is running slow, incoming machine is running faster

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