Electromagnetic torque in rotating electrical machinery is present when ________
A. stator winding alone carries current
B. rotor winding alone carries current
C. air gap is uniform
D. both stator and rotor windings carry current
Answer:A
Electromagnetic torque in rotating electrical machinery is present when ________
A. stator winding alone carries current B. rotor winding alone carries current C. air gap is uniform D. both stator and rotor windings carry current