Question

in dc m/c
A) the current and electromagnetic force in armature conductors are alternating while those at the terminals are uni-directional
B) the current and emf in armature conductors are uni-directional while those at the terminals are alternating
C)the current and the emf in armature conductors at terminals are uni-directional
D)the emf in armature conductors and the terminal alternating while current uni-directional

Answer 1

i don't know ...............