In direct method of determination of efficiency of a dc machine
A. copper losses, magnetic losses and mechanical losses are measured.
B. the machine is actually loaded and input power and output power are measured.
C. either (a) or (b).
D. none of these.
Answer:B
In direct method of determination of efficiency of a dc machine
A. copper losses, magnetic losses and mechanical losses are measured. B. the machine is actually loaded and input power and output power are measured. C. either (a) or (b). D. none of these.