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51118 Pages: 2

Explain the working of LED and photodiode. Draw the necessary figures
wherever applicable..
۱ Module 111

Explain how transistor works as an amplifier. In an npn transistor Ic -
9.9505mA, Ig =10mA, leakage current 108050.5//%. Determine [8८ and 1080
OR

With a neat circuit diagram and waveforms, explain the working of a full wave
bridge rectifier with a capacitor filter.
Module 1V
Draw circuit diagram and derive expressions for gain of inverting and non-
Inverting amplifier using Op-amp.
OR

Draw the block diagram of Digital Storage Oscilloscope and explain the
Working.
Module V

a) Write down the expression for AM wave and explain.
b) Explain the working of super heterodyne receiver.

OR

Explain satellite communication with block diagram
Module VI
a) With necessary diagram, explain how light is transmitted through an optical
_ 7 )] 1 9-20-00

b) Explain each block of DTH system.

OR
a) Explain the concept of cells and frequency reuse.
b) Explain each block of CCTV system.

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