why the carbon brushes are used heat created rotating parts in eiectricity

why the carbon brushes are used heat created rotating parts in
eiectricity

Question Posted / b.malik,capacite infra project

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why the carbon brushes are used heat created rotating parts in eiectricity..

Answer / bala

carbon is a NTC(negative temp coefficient)material. its
resistance decrease while temp gets rise. also carbon gives
wear for give smooth rotation without friction. so its used to
give smooth rotation and less resistance in electricity..!

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