Q. The input signal given to a CE amplifier having a voltage gain of 150 is $V_i = 2\cos(15t + \frac{\pi}{3})$. The corresponding output signal will be :
A) $300\cos(15t + \frac{4\pi}{3})$
B) $300\cos(15t + \frac{\pi}{3})$
C) $75\cos(15t + \frac{2\pi}{3})$
D) $2\cos(15t + \frac{5\pi}{6})$
Explanation
[Solution] Amplitude 2 × 150 = 300, and a CE amplifier adds a phase shift of π: $300\cos(15t + \frac{4\pi}{3})$. Answer (1).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.