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A coupling magnetic field inside a rotating machine or static machine like transformers must involve withI. electrical system to extract energy from electrical system.II. mechanical system to extract energy from electrical system.
  • a)
    Only I is true
  • b)
    Only II is true
  • c)
    I and II are true
  • d)
    I and II are false
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
A coupling magnetic field inside a rotating machine or static machine ...
The energy conversion which involves both electrical as well as mechanical systems must have mutual field.

This question is part of UPSC exam. View all Electrical Engineering (EE) courses
Most Upvoted Answer
A coupling magnetic field inside a rotating machine or static machine ...


Explanation:

Electrical System:
- A coupling magnetic field inside a rotating or static machine like transformers interacts with the electrical system to extract energy. This interaction is essential for the functioning of the machine.
- The magnetic field induces an electromotive force (emf) in the electrical system, which generates electrical energy that can be used to power various devices or systems.

Mechanical System:
- On the other hand, the coupling magnetic field does not directly interact with the mechanical system to extract energy. The mechanical system is usually driven by the electrical energy generated by the interaction between the magnetic field and the electrical system.
- In the case of rotating machines, such as motors or generators, the mechanical system converts the electrical energy into mechanical energy by rotating a shaft. In transformers, the magnetic field is used to transfer energy between different electrical circuits without involving a mechanical system.

Therefore, only the statement "II. mechanical system to extract energy from electrical system" is true. The coupling magnetic field primarily interacts with the electrical system to extract energy, while the mechanical system is driven by the electrical energy generated in the process.
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A coupling magnetic field inside a rotating machine or static machine like transformers must involve withI. electrical system to extract energy from electrical system.II. mechanical system to extract energy from electrical system.a)Only I is trueb)Only II is truec)I and II are trued)I and II are falseCorrect answer is option 'B'. Can you explain this answer?
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