engineering recuitment ISRO Scientist Electrical Mock Test Electrical Machines Three Phase Induction Motor
The speed of an induction motor is controlled by varying the supply frequency keeping V/f constant, then
1
Breakdown torque and magnetizing current would both remain constant
2
Breakdown torque would remain constant but magnetizing current would increase
3
Breakdown torque would decrease but magnetizing current would remain constant
4
Breakdown torque and magnetizing current both would decrease