engineering recuitment MAHATRANSCO AE Electrical Mock Test Electrical Machines Alternator and Synchronous Motors
What type of excitation is given to the rotor winding of a synchronous motor?
1
DC supply at 100 - 250 V
2
AC supply at 400 V/AC
3
Revolving field
4
Induction from stator current
5
DC supply of 400 V