Which one of the following indicates that the generator and grid voltages are in phase ___

A main generator is being prepared for paralleling with an infinite power grid.

Which one of the following indicates that the generator and grid voltages are in phase?

A. The voltage of the generator is equal to the voltage of the grid.
B. The frequency of the generator is equal to the frequency of the grid.
C. The synchroscope pointer is turning slowly in the clockwise direction.
D. The synchroscope pointer is passing through the 12 o=clock position.

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Answer: D

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