The essential difference between an AC generator and a DC generator is that:
The essential difference between an AC generator and a DC generator is that:
A. (a) AC generator has an electromagnet while a DC generator has permanent magnet,
B. (b) DC generator will generate a higher voltage,
C. (c) AC generator will generate a higher voltage,
D. (d) AC generator has slip rings while the DC generator has a commulator.
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