Which Belgian engineer invented the Gramme machine, a direct current dynamo?
Answer and explanation
Correct answer: B. Zénobe Gramme
- Step 1: Zénobe Gramme reinvented Pacinotti's design in 1871 when designing the first commercial power plants operated in Paris. Answer: Zénobe Gramme. Why not the others: None of these fit: Adolphe Sax; Ernest Solvay; Étienne Lenoir.
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