A generator manufacturing company was contracted to produce an a.c dynamo but inadvertently produced a d.c dynamo. To correct this error, the

A. armature coil should be made of silver
B. commutator should be replaced with slip ring
C. commutator should be replaced with split rings
D. armature coil should be made of aluminium

Correct Answer:

Option B – commutator should be replaced with slip ring