While doing regular checks on the dc machine with the lap connected winding, it is reported to have ammeter fluctuations, this can be due to _________
A. different air gaps under poles
B. variable reluctances in the core
C. irregular design deformations
D. all of the mentioned
Answer:D
While doing regular checks on the dc machine with the lap connected winding, it is reported to have ammeter fluctuations, this can be due to _________
A. different air gaps under poles B. variable reluctances in the core C. irregular design deformations D. all of the mentioned