॥ ॥॥॥|॥॥॥ ஆ 10028

27.

28.

Discuss the need for biasing in amplifiers. Explain the functions of each
component in RC coupled’amplifier with relevant waveforms.

What is comparator ? Explain the working of an op-amp based comparator with
circuit diagram and waveforms.

. Explain the principle and working of a digital multimeter with block diagram and

list the advantages over analog multimeter.

Draw the block diagram of a digital storage oscilloscope and specify the functions
of each block.

PART-—C

Answer any 4 Questions. Each carrying five marks each.

31.

32.

8

Draw the block diagram of AM super heterodyne receiver and explain the functions
of each block.

Draw and explain the block diagram of pulsed radar.

. What are the satellite system link models ۶ Explain with neat diagram.
. What are the major network switching subsystems in GSM and explain the

functions of each.

. With the help of block diagram, explain the working of an optical fiber

communication system. What are the advantages ?

. Explain the operation of CCTV with block diagram and mention its applications.