DC Generators - Interview Questions | Exam2Win

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31. Armature reaction of an unsaturated D.C. machine is

A. crossmagnetising

B. demagnetising

C. magnetising

D. none of above

Explanation:

32. In the case of lap winding resultant pitch is

A. multiplication of front and back pitches

B. division of front pitch by back pitch

C. sum of front and back pitches

D. difference of front and back pitches

Explanation:

33. Welding generator will have

A. lap winding

B. wave winding

C. delta winding

D. duplex wave winding

Explanation:

34. The armature core of a D.C. generator is usually made of

A. silicon steel

B. copper

C. non-ferrous material

D. cast-iron

Explanation:

35. In lap winding, the number of brushes is always

A. double the number of poles

B. same as the number of poles

C. half the number of poles

D. two

Explanation: