Question

constitution and working of electric generator

Answer 1

Answer:

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Principle: Electric generator works on the principle of electromagnetic induction. It converts mechanical energy into electrical energy.

Principle: Electric generator works on the principle of electromagnetic induction. It converts mechanical energy into electrical energy. Construction: A loop ABCD is rotated in a permanent magnetic field. Its ends are connected with two semi-circular rings as shown in the figure below. These rings are insulated from each other and can slide while remaining in contact with brushes X and Y. A galvanometer is connected between the two ends of the brush.

Principle: Electric generator works on the principle of electromagnetic induction. It converts mechanical energy into electrical energy. Construction: A loop ABCD is rotated in a permanent magnetic field. Its ends are connected with two semi-circular rings as shown in the figure below. These rings are insulated from each other and can slide while remaining in contact with brushes X and Y. A galvanometer is connected between the two ends of the brush. Working: On rotating the loop in a magnetic field, the side AB moves upward and the side CD moves downwards. Thus magnetic flux linked with the loop changes and a current is induced in it whose direction can be determined by Flemings right hand rule.In the figure, the current is flowing through the path

Principle: Electric generator works on the principle of electromagnetic induction. It converts mechanical energy into electrical energy. Construction: A loop ABCD is rotated in a permanent magnetic field. Its ends are connected with two semi-circular rings as shown in the figure below. These rings are insulated from each other and can slide while remaining in contact with brushes X and Y. A galvanometer is connected between the two ends of the brush. Working: On rotating the loop in a magnetic field, the side AB moves upward and the side CD moves downwards. Thus magnetic flux linked with the loop changes and a current is induced in it whose direction can be determined by Flemings right hand rule.In the figure, the current is flowing through the pathB-A-G-D-C.

Principle: Electric generator works on the principle of electromagnetic induction. It converts mechanical energy into electrical energy. Construction: A loop ABCD is rotated in a permanent magnetic field. Its ends are connected with two semi-circular rings as shown in the figure below. These rings are insulated from each other and can slide while remaining in contact with brushes X and Y. A galvanometer is connected between the two ends of the brush. Working: On rotating the loop in a magnetic field, the side AB moves upward and the side CD moves downwards. Thus magnetic flux linked with the loop changes and a current is induced in it whose direction can be determined by Flemings right hand rule.In the figure, the current is flowing through the pathB-A-G-D-C.After half rotation, the ring P comes in contact with brush Y and the ring Q, comes in contact with brush X. Thus, the brush X is always in contact with the side moving upwards and brush Y is always in contact with side moving downwards as a result of which the current flows in one direction. This current is called direct current. This type of generator is called D.C. generator. Similarly, instead of a half ring, if a full ring is used then, A.C. current can be generated and such a generator is called an A.C. generator.

Principle: Electric generator works on the principle of electromagnetic induction. It converts mechanical energy into electrical energy. Construction: A loop ABCD is rotated in a permanent magnetic field. Its ends are connected with two semi-circular rings as shown in the figure below. These rings are insulated from each other and can slide while remaining in contact with brushes X and Y. A galvanometer is connected between the two ends of the brush. Working: On rotating the loop in a magnetic field, the side AB moves upward and the side CD moves downwards. Thus magnetic flux linked with the loop changes and a current is induced in it whose direction can be determined by Flemings right hand rule.In the figure, the current is flowing through the pathB-A-G-D-C.After half rotation, the ring P comes in contact with brush Y and the ring Q, comes in contact with brush X. Thus, the brush X is always in contact with the side moving upwards and brush Y is always in contact with side moving downwards as a result of which the current flows in one direction. This current is called direct current. This type of generator is called D.C. generator. Similarly, instead of a half ring, if a full ring is used then, A.C. current can be generated and such a generator is called an A.C. generator.solution

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Answer 2

Principle:  Electric generator works on the principle of electromagnetic induction. When the coil of electric generator rotates in a magnetic field, the magnetic field induces a current in this coil. This induced current then flows into the circuit connected to the coil.

AC Generator:  A generator which converts mechanical energy into electric energy in the form of alternating current is called AC Generator.

Working:

a.        When the armature coil ABCD rotates in the magnetic field provided by the strong magnets, it cuts the magnetic lines of forces.

b.       Thus the changing magnetic field produces induced current in the coil. The direction of induced current is determined by the Flemings right hand rule.

c.        The current flows out through the brush B1 in one direction in the first half of the revolution and through the brush B2 in the next half revolution in the reverse direction, this process is repeated.

d.       Therefore, the induced current produced is of alternating nature. Such a current is called as alternating current

(Construction is in the attachment)

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