Electrical Machines
DC generator will not build up voltage

 if field resistance is more than critical resistance.
  if it has lost residual magnetism.
 due to wrong direction of rotation.
 any one of above.

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Electrical Machines
In an alternator, voltage drops occurs in

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

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Electrical Machines
Two generators operating in parallel with rating 50MW and 100MW respectively. Both their respective governor settings are identical as 4%, consider same no load frequency. How will the machine share a common load of 100 MW

 33.33 MW and 66.67 MW respectively
 any of the above
 66.67 MW and 33.33 MW respectively
 50 MW and 50 MW respectively

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