Electrical and Electronics Engineering Machines Quiz
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Questions and Answers

What principle does a DC machine work on?

  • Newton's law of universal gravitation
  • Boyle's law of ideal gases
  • Faraday’s law of electromagnetic induction (correct)
  • Ohm's law of electrical circuits

    • How is the direction of torque or current developed in a DC machine determined?

  • Coulomb's law of electrostatic force
  • Fleming’s left and right-hand rules (correct)
  • Newton's first and second laws
  • Kirchhoff's voltage and current laws

    • What is the range of sizes for a DC machine mentioned in the text?

  • From small machines used in laptops to giant 50,000 kW or more rolls
  • From medium-sized machines used in household appliances to giant 100,000 kW or more rolls
  • From very small machines used in quartz crystal watches to giant 75,000 kW or more rolls (correct)
  • From tiny machines used in calculators to giant 80,000 kW or more rolls

    • Which law of physics is not relevant to the operation of a DC machine?

    <p>Boyle's law of ideal gases</p> Signup and view all the answers

    What is the primary function of a DC machine?

    <p>To generate unidirectional torque or current</p> Signup and view all the answers

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