The main function of interpoles in a loaded DC machine is to minimize _______between the brushes and the commutator.(a) Friction(b) Sparking(c) Current(d) Wear and tearThis question was posed to me by my college professor while I was bunking the class.This key question is from Commutation Process in division Commutation Process & Excitation Methods of DC Machines

The main function of interpoles in a loaded DC machine is to minimize

1.	The main function of interpoles in a loaded DC machine is to minimize _______between the brushes and the commutator.(a) Friction(b) Sparking(c) Current(d) Wear and tearThis question was posed to me by my college professor while I was bunking the class.This key question is from Commutation Process in division Commutation Process & Excitation Methods of DC Machines
Answer» RIGHT option is (b) Sparking Easiest explanation: Interpoles are INTRODUCED in a DC machine in order to SPEED up the commutation process, SP that sparking will be minimised. As, sparking arises at end of commutation period when commutation is not completed in given TIME.

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