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If the electromagnetic torque in a DC shunt-generator is opposite, what can be further concluded?
  • a)
    Mechanical power is absorbed by the machine
  • b)
    Mechanical power is delivered by the machine
  • c)
    Electromagnetic torque is in same direction of prime mover
  • d)
    None of the mentioned
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
If the electromagnetic torque in a DC shunt-generator is opposite, wha...
In a DC shunt generator, the electromagnetic torque is generated by the interaction between the magnetic field produced by the field winding and the armature current. The direction of the electromagnetic torque depends on the direction of the armature current and the polarity of the magnetic field.
If the electromagnetic torque in a DC shunt generator is opposite, it means that the direction of the torque is opposite to the rotation of the generator. This indicates that the machine is acting as a motor, absorbing mechanical power from an external source to drive the rotation.
In other words, when the electromagnetic torque is opposite, the DC shunt generator is not functioning as a generator but as a motor, converting electrical power into mechanical power and absorbing power from the mechanical system connected to it.
Therefore, the correct answer is A: Mechanical power is absorbed by the machine.
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If the electromagnetic torque in a DC shunt-generator is opposite, what can be further concluded?a)Mechanical power is absorbed by the machineb)Mechanical power is delivered by the machinec)Electromagnetic torque is in same direction of prime moverd)None of the mentionedCorrect answer is option 'A'. Can you explain this answer?
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