railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical Machines Alternator and Synchronous Motors Synchronous Motor Starting
A three-phase synchronous motor is made to operate at no-load, with field excitation. Assuming no losses are present under this condition, what is the phase difference between the supply voltage and back EMF?
1
180o
2
90o
3
60o
4
0o