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

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

ANSWER DOWNLOAD EXAMIANS APP

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

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

ANSWER DOWNLOAD EXAMIANS APP