In a DC machine
A. the current and the EMF in armature conductors are alternating while those at the terminals are unidirectional.
B. the current and the EMF in armature conductors are unidirectional while those at the terminals are alternating.
C. the current and the EMF in armature conductors and at the terminals are unidirectional.
D. the EMF in armature conductors and at the terminals is alternating while current there is unidirectional.
Answer:A
In a DC machine
A. the current and the EMF in armature conductors are alternating while those at the terminals are unidirectional. B. the current and the EMF in armature conductors are unidirectional while those at the terminals are alternating. C. the current and the EMF in armature conductors and at the terminals are unidirectional. D. the EMF in armature conductors and at the terminals is alternating while current there is unidirectional.