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A synchronous motor is operating with normal excitation. With the increase in load, the armature current drawn from the supply mains increases due to:
  • a)
    Increase in resultant voltage across the armature
  • b)
    Increase in power factor
  • c)
    Increase in back emf
  • d)
    Fall in motor speed
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
A synchronous motor is operating with normal excitation. With the incr...
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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A synchronous motor is operating with normal excitation. With the increase in load, the armature current drawn from the supply mains increases due to:a)Increase in resultant voltage across the armatureb)Increase in power factorc)Increase in back emfd)Fall in motor speedCorrect answer is option 'A'. Can you explain this answer?
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A synchronous motor is operating with normal excitation. With the increase in load, the armature current drawn from the supply mains increases due to:a)Increase in resultant voltage across the armatureb)Increase in power factorc)Increase in back emfd)Fall in motor speedCorrect answer is option 'A'. Can you explain this answer? for Railways 2024 is part of Railways preparation. The Question and answers have been prepared according to the Railways exam syllabus. Information about A synchronous motor is operating with normal excitation. With the increase in load, the armature current drawn from the supply mains increases due to:a)Increase in resultant voltage across the armatureb)Increase in power factorc)Increase in back emfd)Fall in motor speedCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Railways 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A synchronous motor is operating with normal excitation. With the increase in load, the armature current drawn from the supply mains increases due to:a)Increase in resultant voltage across the armatureb)Increase in power factorc)Increase in back emfd)Fall in motor speedCorrect answer is option 'A'. Can you explain this answer?.
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