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प्रश्न
State the function of a split ring in D.C. motor.
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उत्तर
When the coil of a D. C motor turns through 180°, the split ring reverses the direction of the current in the coil from CBAD to DABC.
In this way, the coil continues to rotate continuously in the same direction and positive and negative polarities are maintained.
संबंधित प्रश्न
You are given an iron nail, a torch cell, and a long piece of insulated copper wire. With the help of a labelled neat diagram, describe in steps how you will make the nail, an electromagnet.
Tick the most appropriate answer.
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Name the material of core in (a) an electric bell, (b) electromagnet, (c) a d.c. motor, (d) an a.c. generator and (e) a transformer.
Answer the following in short.
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or
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