The variation of $EMF$ with time for four types of generators are shown in the figures. Which amongst them can be called $AC$ ?
The variation of $EMF$ with time for four types of generators are shown in the figures. Which amongst them can be called $AC$ ?
- [NEET 2019]
- A
$(a)$ and $(d)$
- B
$(a), (b), (c)$ and $(d)$
- C
$(a)$ and $(b)$
- D
Only $(a)$
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- [JEE MAIN 2022]
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- [AIIMS 2009]
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