MDCAT Physics MCQ #219

A 3-phase AC power supply has a power factor of 0.8. What is the phase angle (φ) between the voltage and current?

MDCAT Physics MCQ #219

  1. Question 1

    Q1. A 3-phase AC power supply has a power factor of 0.8. What is the phase angle (φ) between the voltage and current?

    • A) cos^(-1)(0.8)
    • B) sin^(-1)(0.8)
    • C) tan^(-1)(0.8)
    • D) φ = 30°

    Answer: cos^(-1)(0.8)

    Explanation: Phase angle φ = cos^(-1)(power factor), so φ = cos^(-1)(0.8).