engineering physics MCQ #83

The peak value of an AC is 5 A and its frequency is 50 Hz. The rms current and time taken to reach the peak value are

engineering physics MCQ #83

  1. Question 1

    Q1. The peak value of an AC is 5 A and its frequency is 50 Hz. The rms current and time taken to reach the peak value are

    • A) 3.54 A, 1 / 200 s
    • B) 3.54 A, 1 / 100 s
    • C) 5 A, 1 / 200 s
    • D) 5 A, 1 / 100 s

    Answer: 3.54 A, 1 / 200 s

    Explanation: I_rms = I_peak / √2 = 5 / √2 = 3.54 A. Time to peak = 1 / (4 * 50) = 1 / 200 s.