Which of the following statements is correct? [NTSE 2014] a. AC generator generates a higher vol...

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Which of the following statements is correct?
[NTSE 2014]
a. AC generator generates a higher voltage.
b. DC generator generates a higher voltage.
c. AC generator has a permanent magnet whereas a DC generator has an electromagnet.
d. There is a split-ring commutator in a DC generator but not in an \( \mathrm{AC} \) generator.
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