Electronics - Magnetism and Electromagnetism - Discussion

Discussion Forum : Magnetism and Electromagnetism - General Questions (Q.No. 2)
Which electromagnetic device uses brushes and a commutator?
A speaker
A dc generator
A relay
A solenoid
Answer: Option
No answer description is available. Let's discuss.
4 comments Page 1 of 1.

Aditi said:   1 decade ago
Kindly brief about commutator?

Javed Jamadar said:   1 decade ago
Brushes helps in conduction and free rotation with electric conductivity.

Kiran said:   1 decade ago
Commutator genartes ac signal tht must b coverted into ac hence brushes are used.

Mad said:   1 decade ago
How it is useful in the generators?

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