Question

The essential difference between AC generator and a DC generator is that

AC generator has an electromagnetic while a DC generator has permanent magnet,
DC generator will generator a higher voltage,
AC generator will generator a higher voltage,
AC generator has slip rings while the DC generator has a commutator

Answer 1

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Answer 2

$\bf\huge\underline\mathtt\red{Answer}$

(d) AC generator has slip rings while the DC generator has a commutator.

Due to slip ring rings, the current produced by AC generator flows in both directions while current produced by DC generator flows in single direction.