AC IMPORTANT QUESTIONS

                             AC IMPORTANT QUESTIONS

1. a) discuss the effect of feedback on the performance of AM transmitter 

    b) discuss the factors influencing the choice of intermediate frequency 

       for a radio receiver.

2. a) draw the block diagram of fm receiver and explain its working.

   b) define i) sensitivity, ii) selectivity, iii) fidelity

3. discuss the modulation and demodulation of PWM

4. a) explain about TDM with neat figure

   b) bring out differences between TDM and FDM.