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When the load on a synchronous motor running with normal excitation is increased, armature current drawn by it increases because:

When the load on a synchronous motor running with normal excitation is increased, armature current drawn by it increases because: Correct Answer net resultant voltage in the amature is increased

When a synchronous motor is operating with normal excitation, with the increase in load:

  • The motor continues to run at a synchronous speed as it is a constant speed motor
  • The torque angle δ increases
  • The excitation voltage Ef remains constant
  • The armature current Ia drawn from the supply increases due to increase in resultant voltage across the armature
  • The phase angle ϕ increases in the lagging direction

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