McqMate
Q. |
Due to which of the following reasons, copper brushes in D.C. machine are used? |
A. | when high voltage and small currents are involved |
B. | when low voltage and high currents are involved |
C. | in both of the above cases |
D. | in none of the above cases |
Answer» C. in both of the above cases |
View all MCQs in
Electrical and Electronics EngineeringNo comments yet