MDCAT Physics MCQ #99

Why does an AC generator produce sinusoidal output voltage?

MDCAT Physics MCQ #99

  1. Question 1

    Q1. Why does an AC generator produce sinusoidal output voltage?

    • A) Coil rotates in uniform magnetic field
    • B) Slip rings maintain constant contact
    • C) Field magnet has alternating poles
    • D) Rectifier smoothing action

    Answer: Coil rotates in uniform magnetic field

    Explanation: Sinusoidal EMF results from uniform motion through magnetic field. Option B enables operation but doesn't cause waveform shape.