Electrical Engineering Mcqs

In D.C. generators the polarity of the interpoles_____________?
  • (A)  is the same as that of the main pole ahead
  • (B)  is the same as that of the immediately preceding pole
  • (C)  is opposite to that of the main pole ahead
  • (D)  is neutral as these poles do not play part in generating
  • (E)  m.f.
Armature reaction in a generator results in_____________?
  • (A)  demagnetisation of leading pole tip and magnetisation of trailing pole tip
  • (B)  demagnetisation of trailing pole tip and magnetisation of leading pole tip
  • (C)  damagnetising the center of all poles
  • (D)  magnetising the center of all poles