Fan, AC compressor have an Induction motor which requires changing magnetic which is only possible by AC current. Drill machine, mixer grinder, blower, angle grinder and so many other power tools/equipments which requires high starting torque uses a Universal Motor which can run on AC as well as Dc too.
4:14 bro bcz the ac fan has no magnet and the battery power is dc and fan dosent have magnet if the fan have the magnet then the fan was move successfully!
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