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Magnetic Effects Of Electric Current

Question 4:

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.

(b) DC generator will generate a higher voltage.

(c) AC generator will generate a higher voltage.

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

Answer:

(d) An AC generator has two rings called slip ringsā€¦

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