An AC generator consists ofa)A coil that can rotate in a permanent mag...
Explanation:AC generators operate on the same fundamental principles of electromagnetic induction.The turning of a coil in a magnetic field produces motional emfs in both sides of the coil.A slip ring is a method of making an electrical connection through a rotating assembly. Formally, it is an electric transmission device that allows energy flow between two electrical rotating parts, such as in a motor.
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An AC generator consists ofa)A coil that can rotate in a permanent mag...
AC Generator Components:
Coil Rotating in a Permanent Magnetic Field:
- The AC generator consists of a coil that can rotate in a permanent magnetic field.
- As the coil rotates, it cuts through the magnetic field lines, inducing an electromotive force (emf) in the coil.
Slip Rings:
- The rotating coil is provided with slip rings, which allow the generated AC current to be extracted without the need for physical contact with the rotating coil.
Function of Permanent Magnet Rotor:
- The permanent magnet rotor creates a magnetic field in which the coil rotates.
- The interaction between the rotating coil and the magnetic field results in the generation of AC current.
Working Principle:
- When the coil rotates in the magnetic field, the magnetic flux linking the coil changes, inducing an emf according to Faraday's law of electromagnetic induction.
- This emf causes current to flow in the coil, which is then extracted through the slip rings.
Advantages of AC Generator:
- AC generators are widely used for power generation due to their ability to produce alternating current, which is suitable for transmission over long distances.
- They are efficient and reliable sources of electrical energy.
Conclusion:
An AC generator consists of a coil that can rotate in a permanent magnetic field and is provided with slip rings to extract the generated AC current. This setup allows for the efficient generation of alternating current for various electrical applications.