engineering recuitment DVC Junior Engineer Mock Test 2024 Electrical Machines Alternator and Synchronous Motors Alternator Rotor Types
A three-phase, salient pole synchronous motor is connected to an infinite bus. Ig is operated at no load a normal excitation. The field excitation of the motor is first reduced to zero and then increased in reverse direction gradually. Then the armature current
1
Remains constant
2
First increases and then decreases steeply
3
First decreases and then increases steeply
4
Increases continuously