Two generators A and B have 6-poles each. Generator A has wave wound armature while generator B has lap wound armature. The ratio of the induced e.m.f. is generatorA and B will be
A)2 : 3
B)3 : 1
C)3 : 2
D)1 :3

Question

Quizplus · Accepted Answer

The induced e.m.f. in a generator is directly proportional to the number of parallel paths in the armature winding. A wave wound armature has 2 parallel paths regardless of the number of poles, while a lap wound armature has as many parallel paths as there are poles. Since both generators have 6 poles, generator B (lap wound) will have 6 parallel paths. Therefore, the ratio of the induced e.m.f. of generator A to generator B is 2:6 or simplified to 3:1.

Two Generators a and B Have 6-Poles Each