engineering physics MCQ #1879

The input signal given to a CE amplifier having a voltage gain of 150 is Vi = 2 cos(15t + π/3). The corresponding output signal will be

engineering physics MCQ #1879

  1. Question 1

    Q1. The input signal given to a CE amplifier having a voltage gain of 150 is Vi = 2 cos(15t + π/3). The corresponding output signal will be

    • A) 300 cos(15t + π/3)
    • B) 300 cos(15t + 4π/3)
    • C) 75 cos(15t + 2π/3)
    • D) 2 cos(15t + π/3)

    Answer: 300 cos(15t + 4π/3)

    Explanation: Output voltage = voltage gain * input voltage, with a 180° phase shift, so Vo = 300 cos(15t + 4π/3).