Inventions Practice Tests
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The MCQ: In 1832, which one of the following invents the first commutator DC electric motor; "Electrical Motors" App Download (Free) with answers sir nikola tesla, sir otto blathy, sir william sturgeon and sir michael faraday for online classes. Solve inventions and inventors quiz questions, download Google eBook (Free Sample) for virtual online school.
MCQ 1: In 1832, which one of the following invents the first commutator DC electric motor?
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