Power Factor MCQ [PF & PF Correction Multiple Choice Questions]

Electrical Engineering MCQ shares Power Factor MCQ Questions.

Power Factor is a ratio of

Power factor is a ratio of:

  1. True power to apparent power
  2. Apparent power to true power
  3. Sum of real and reactive to apparent power
  4. Apparent power to (real – reactive) power

Correct answer: 1. True power to apparent power

Power factor can be mathematically expressed as

Power factor can be mathematically expressed as:

  1. P/Q
  2. Q/P
  3. P/S
  4. S/P

Correct answer: 3. P/S


The power factor angle of a purely inductive circuit is

The power factor angle of a purely inductive circuit is:

  1. 45 degree
  2. 60 degree
  3. 75 degrees
  4. 90 degree

Correct answer: 4. 90 degrees


In a load comprising of resistance and inductance

In a load comprising of resistance and inductance:

  1. Load current lags voltage
  2. Load voltage lags current
  3. Both are in phase
  4. Any of above

Correct answer: 1. Load current lags voltage


Maximum value of Power Factor is

The maximum value of power factor is:

  1. 0
  2. 0.3
  3. 0.95
  4. 1

Correct answer: 4. 1

Explanation: The maximum value of power factor is 1. The maximum power factors exists in a purely resistive circuit.

The power factor of capacitive circuits is

The power factor of capacitive circuits is:

  1. Leading
  2. Lagging
  3. Both of these
  4. Any of these

Correct answer: 1. Leading


A circuit having poor power factor will draw

A circuit having poor power factor will draw:

  1. No current
  2. Low current
  3. Normal current
  4. High current

Correct answer: 4. High current


The power factor of purely inductive circuits is

The power factor of purely inductive circuits is:

  1. Leading
  2. Lagging
  3. Both of these
  4. Any of these

Correct answer: 2. Lagging


A 500 kVA circuit drawing 200 kW and an inductive load requires how much capacitance to obtain a unity power factor

A 500 kVA circuit drawing 200 kW and an inductive load requires how much capacitance to obtain unity power factor:

  1. 100
  2. 200
  3. 300
  4. 400

Correct answer: 3. 300

Similar Questions on Power Factor:

  1. The power factor of an alternator depends on which factor

3 thoughts on “Power Factor MCQ [PF & PF Correction Multiple Choice Questions]

  • May 2, 2020 at 1:13 pm
    Permalink

    Thanks for this Mcqs

  • Reply
  • August 15, 2020 at 6:02 am
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    In the MCQ “power factor can be mathematically expressed as” the answer given here (P/Q) is wrong. The right answer should be (P/S) as per the definition of power factor.

  • Reply
    • August 16, 2020 at 6:48 pm
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      Dear Karan. There was typo mistake. Corrected now. Thanks for correction.

    • Reply

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