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MCQ on DC MotorQuiz Book Download

MCQ: First electric 'DC' motor was invented by

  1. Frank Julian Sprague
  2. Fran?ois Isaac de Rivaz
  3. George Stephenson
  4. Percy Spencer

A

MCQ: First electric DC motor was invented in

  1. 1856
  2. 1866
  3. 1876
  4. 1886

D