In D.C. generators, rapid brush ware causes due to _________ - Study24x7
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Karan Singh
20 May 2019 11:15 AM study24x7 study24x7

 In D.C. generators, rapid brush ware causes due to _________

A

Severe sparking

B

Rough commutator surface

C

Imperfect contact

D

Severe sparking, rough commutator surface or imperfect contact

Railways IIT-JEE Sciences
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  • geet sharma
    • Brushes are the parts in a DC machine which are always in contact with rotating and stationary parts. Thus, imperfect contact, rough surfaces, sparking all these may reduce the life of brushes.

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    Reply 20 May 2019 11:46 AM
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