engineering recuitment RVUNL JEn (RSEB) Mock Tests 2025 Electrician and Wireman Electrical Machines Synchronous Motors
A synchronous machine is called a doubly excited machine because
1
It can be over excited
2
It has two sets of rotor poles
3
Both its rotor and stator are excited
4
It needs twice the normal exciting current
5
It has two sets of stator poles