If a main generator output breaker is closed when the generator output voltage is 90 degrees out of phase with the power grid voltage, the main generator will experience a ___ stress

If a main generator output breaker is closed when the generator output voltage is 90 degrees out of phase with the power grid voltage, the main generator will experience a __________ stress;

if the breaker remains closed and no additional operator action is taken, the main generator voltage will __________ with the grid voltage.

A minor; remain out of phase
B. minor; become locked into phase
C. potentially damaging; remain out of phase
D. potentially damaging; become locked into phase

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Answer: D

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