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Power and Energy Measurement Quiz
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Power and Energy Measurement Quiz

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Questions and Answers

Which of the following equations represents the relationship between power and energy?

  • $S = P + jQ$
  • $E = \int p(t) dt$ (correct)
  • $P = \int p(t) dt$
  • $P = UI$
  • Which sign indicates consumed electric power in a DC power network?

  • + (correct)
  • /
  • *
  • -
  • What is the equation for voltage in a sinusoidal alternating current circuit?

  • $u(t) = \sqrt{2} I \sin(\omega t)$
  • $u(t) = \sqrt{2} U \sin(\omega t)$ (correct)
  • $u(t) = \sqrt{2} I \cos(\omega t)$
  • $u(t) = \sqrt{2} U \cos(\omega t)$
  • What is the equation for power in a sinusoidal alternating current circuit?

    <p>$p(t) = UI \cos(\omega t)$</p> Signup and view all the answers

    What is the equation for reactive power in a sinusoidal alternating current circuit?

    <p>$Q = \sqrt{S - P^2/2}$</p> Signup and view all the answers

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