What is the relation of the copper loss and brush contacts with the total loss in small dc motors?
(a) copper loss and brush contacts = 2 * total loss
(b) copper loss and brush contacts = 2/3 * total loss
(c) copper loss and brush contacts = 1/3 * total loss
(d) copper loss and brush contacts = total loss
The question was asked by my college director while I was bunking the class.
I want to ask this question from Design of Small Universal Commutator Motors in portion Design of Small Electrical Machines, Starters and Field Regulators of Design of Electrical Machines