Explanation: The armature windings of both the DC and AC machines have to deal with alternating current only; this is the reason why the armature structure of all rotating machines are laminated in order to reduce the eddy current losses. 9. Armature winding is one in which working ___________
A. flux is produced by field current
B. flux is produced by the working emf
C. emf is produced by the working flux
D. emf is produced by the leakage flux
Answer:A
Explanation: The armature windings of both the DC and AC machines have to deal with alternating current only; this is the reason why the armature structure of all rotating machines are laminated in order to reduce the eddy current losses. 9. Armature winding is one in which working ___________
A. flux is produced by field current B. flux is produced by the working emf C. emf is produced by the working flux D. emf is produced by the leakage flux
Explanation: In an electrical machine, armature winding is one in which the working emf is induced by the working flux. 10. Why is the air gap between stator and rotor should be kept as small as mechanically possible in induction motor?