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 an alternator, voltage drops occurs in

  armature resistance and leakage reactance.
  armature resistance, leakage reactance, armature reaction and earth connection.
  armature resistance, leakage reactance and armature reaction.
  armature resistance only.

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Electrical Machines
DC Motor

  dc shunt motor with field weakening.
  dc series motor.
  dc compound motor.
  dc shunt with armature resistance control.

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