The essential difference between an AC generator and a DC generator is that -
A
AC generator has an electromagnet while a DC generator has permanent magnet.
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B
DC generator will generate a higher voltage.
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C
AC generator will generator a higher voltage.
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D
AC generator has slip rings while the DC generator has a commutator.
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Solution
The correct option is D AC generator has slip rings while the DC generator has a commutator. The essential difference between an AC generator and a DC generator is that AC generator has slip rings while the DC generator has a communtator.