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DC Circuits MCQs with Explanatory Answers

DC Circuits MCQs with Explanatory Answers

1. In a DC Circuit, Inductive reactance would be_________

  1. Equal As in AC Circuits
  2. High
  3. Extremely High
  4. Zero

Show Explanatory Answer

Show Explanatory Answer

Answer:     4.    Zero
Explanation

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2. In DC Circuits, We can improve the Circuit power factor by Capacitors.

  1. True
  2. False

Show Explanatory Answer

Show Explanatory Answer

Answer       2         False
Explanation:
There is no concept of power factor improvement in DC Circuits because the phase angle (θ) between Current (I) and voltage (V) is 0 and the then power factor becomes Cos θ = 1. So power factor in DC Circuits is 1 and Only 1. In other words there is no reactive component in DC Circuits so the power factor is 1. And the Power Formula in DC Circuits is P = V x I.

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