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If power factor = 1, then the current to the load is ______ with the voltage across it.(a) out of phase(b) in phase(c) 90⁰ out of phase(d) 45⁰ out of phaseThis question was posed to me in exam.I would like to ask this question from Apparent Power and Power Factor in portion Power and Power Factor of Network Theory

Answer»

Correct answer is (b) in PHASE

The explanation is: If POWER factor = 1, then the CURRENT to the LOAD is in phase with the voltage across it because the expression of power factor is power factor = cosθ.



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