Electrical Machines
What will be the e.m.f. generated by a 4 pole lap connected DC Generator rotating at 1500 r.p.m.? Its flux per pole is 0.4 mWb and total no of armature conductors is 1000.

 10 volts.
 20 volts.
 30 volts.
 40 volts.

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Electrical Machines
In a DC machine the armature mmf is

 rotating with respect to field poles.
  stationary with respect to armature.
  stationary with respect to field poles.
  rotating with respect to field poles as well as armature.

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