railway UPMRC SCTO 2024 Mock Test Electrical Machines Alternator and Synchronous Motors Alternator Parallel Operation
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?
1
Only frequency
2
Voltage, frequency and phase sequence; and the phase difference between the alternator and infinite voltages must be zero
3
Only voltage
4
Only phase sequence