In order to produce the strength of magnetic flux required in larger DC machines
a) electromagnets are used
b) copper switches are used
c) permanent magnets are used
d) the field windings are double wound
e) booster transformers are used
Answer: A
In order to produce the strength of magnetic flux required in larger DC machines
a) electromagnets are used
b) copper switches are used
c) permanent magnets are used
d) the field windings are double wound
e) booster transformers are used
Answer: A