What is the relation of the copper loss and brush contacts with the total loss in universal commutator motors?

copper loss and brush contacts = total loss * 2

copper loss and brush contacts = total loss

copper loss and brush contacts = total loss/2

copper loss and brush contacts = total loss *3

What is the relation of the copper loss and brush contacts with the to

1.	What is the relation of the copper loss and brush contacts with the total loss in universal commutator motors?
A.	copper loss and brush contacts = total loss
B.	copper loss and brush contacts = total loss/2
C.	copper loss and brush contacts = total loss * 2
D.	copper loss and brush contacts = total loss *3
Answer» C. copper loss and brush contacts = total loss * 2