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

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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

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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

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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

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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

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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

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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