Electrical Machines
A 4 pole dc motor with armature winding resistance of 0.6 ohm receives a supply of 230 Volt. If the back emf produced during running condition is equal to 210 volt. Calculate the current flowing through the armature at this point.

 44.47 Amp.
 29 Amp.
  43 Amp.
  33.33 Amp.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In a DC generator, the armature reaction results in

 magnetization of leading and demagnetization of trailing pole tip.
 demagnetization of centers of poles.
  magnetization of inter poles.
  demagnetization of leading & magnetization of trailing pole tip.

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Electrical Machines