The input signal given to a CE amplifier having a voltage gain of 150 is Vi=2cos15t+π3. The corresponding output signal will be

Here, Input signal, Vi=2cos15t+π3 and voltage gain, Av=150 As Av=VoVi∴  Output signal, Vo=AvVi Since CE amplifier gives a phase difference of π=180° between input and output signals, ∴ Vo=1502cos15t+π3+π                               =300cos15t+4π3