To transfer the power to or from the rotor of alternators or some AC motors
a) field poles are employed
b) rheostats are used
c) a commutator is used
d) slip rings are employed
e) antifriction bearings are employed
Answer: D
To transfer the power to or from the rotor of alternators or some AC motors
a) field poles are employed
b) rheostats are used
c) a commutator is used
d) slip rings are employed
e) antifriction bearings are employed
Answer: D