1.

A two-stage amplifier has an input power of 30μW and an output power of 1.5mW. One stage has a gain of 3. What is the gain of the second stage?(a) 20(b) 16.6(c) 40(d) 22.36I have been asked this question during an interview.I would like to ask this question from Gain, Attenuation & Decibels in portion Fundamentals of Electronics of Avionics

Answer»

Right option is (b) 16.6

Easy explanation: TOTAL gain = 1.5×10^-3/30×10^-6 = 50 = STAGE 1 gain X stage 2 gain

Stage 2 gain = 50 / 3 = 16.6.



Discussion

No Comment Found

Related InterviewSolutions