Electrical Machines
In a synchronous generator with constant steam input supplies power to an infinite bus at a lagging power factor. If the excitation is increased

 both power angle and power factor increase
 both power angle and power factor decrease
 power angle decrease and power factor increase
 power angle increase and power factor decrease

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Electrical Machines
In an alternator, voltage drops occurs in

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

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