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Describe briefly, with the help of a labeled diagram, the basic elements of an A.C. generator. State its underlying principle. Show diagrammatically how an alternating emf is generated by a loop of wire rotating in a magnetic field. Write the expression for the instantaneous value of the emf induced in the rotating loop.
Asked by Topperlearning User | 07 Jul, 2015, 02:05: PM
answered-by-expert Expert Answer

Basic elements of an A.C. generator


An A.C. generator consists of a rotor shaft on which a coil is mounted. A magnetic field is created around an armature coil with the help of permanent magnets.
The terminals of the coil are connected to two slip rings. Carbon brushes are attached to slip rings so as to make connection with an external circuit.
Underlying principle of an A.C. generator
The underlying principle responsible for the working of an ?.C. generator is electromagnetic induction. According to this principle, if a conductor is placed in a varying magnetic field, then current is induced in the conductor.


Answered by | 07 Jul, 2015, 04:05: PM

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