Before an alternator can be connected to an infinite bus, which of the – McqOptions

MCQOPTIONS

1.	Before an alternator can be connected to an infinite bus, which of the following must be the same for the alternator and the infinite bus?
A.	Only frequency
B.	Voltage, frequency and phase sequence; and the phase difference between the alternator and infinite voltages must be zero
C.	Only voltage
D.	Only phase sequence
Answer» C. Only voltage

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