In a dc machine
A. the current and emf in armature conductors are alternating while those at the terminals are unidirectional
B. the current and ernf in armature conductors are unidirectional while those at the terminals are alternating.
C. the current and 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
Show Answer
Answer: A
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