engineering recuitment DRDO Technician A 2022 Mock Test Series (Tier I) Electrician and Wireman Electrical Machines Polyphase Induction Motors
What will change in the 3-phase induction motor If the phase order of supply is reversed by changing any two leading connected to the stator?
1
The direction of rotation of the rotor will remain the same.
2
The direction of rotational mmf and the developed torque will be in the opposite direction.
3
The direction of rotational magnetic field in the stator will change.
4
The direction of torque will remain the same.