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NEET 2019 · AC Basics: Peak, RMS & Average Values

AC Basics: Peak, RMS & Average Values question from NEET 2019

Q39NEET 2019Easy

AC Basics: Peak, RMS & Average Values

The variation of EMF with time for four types of generators are shown in the figures. Which amongst them can be called AC?

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Answer: (c)

AC means the emf reverses its direction (sign) periodically.
In all four graphs (a), (b), (c), (d) the emf takes both positive and negative values, so each one alternates.
So the answer is (c) (a), (b), (c), (d).

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