Electrical Machines
The factors that are responsible for decrease in terminal voltage of a shunt generator are

  armature resistance, effect of armature reaction.
 armature resistance, inter poles, armature.
 armature resistance, effect of armature reaction.
  reduction in field current, effect of armature reaction, armature.

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Electrical Machines
In a synchronous motor when the rotor speed exceeds the synchronous speed during hunting

  the damper bars develop induction generator torque.
  the damper bars develop synchronous motor torque.
  negative sequence currents are generated.
  the damper bars develop induction motor torque.

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Electrical Machines
In synchronous generator, inverted V curve is drawn between

 field current on X-axis and power factor on Y-axis
 field current on Y-axis and power factor on X-axis
 field current on Y-axis and armature current on X-axis
 field current on X-axis and armature current on Y-axis

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