engineering recuitment UPCL AE (E&M) 2021 Mock Test Electrical Machines Alternator and Synchronous Motors
As the load is applied to a synchronous motor, the motor takes more armature current because
1
The increased load has to take more current
2
The back e.m.f. decreases causing an increase in motor current
3
The rotor by shifting its phase backwards causes a motor to take more current
4
The rotor strengthens the rotating field causing more motor current