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in a dc machine | |
A. | the current and emf in armature conductors are alternating while those at the terminals are unidirectional [Correct Answer] |
B. | the current and ernf in armature conductors are unidirectional while those at the terminals are alternating. [Wrong Answer] |
C. | the current and emf in armature conductors and at the terminals are unidirectional [Wrong Answer] |
D. | the emf in armature conductors and at the terminals is alternating while current there is unidirectional [Wrong Answer] |