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F7154

0.995 and [६ = 10mA. Find 18 and Ic.
Explain the diode equation. The forward current flowing through a diode at room
temperature is 1൩4. when the forward bias applied is 0.2४. The reverse
saturation current through the diode 15 0.45yA at room temperature. Determine
whether the diode is made up of Silicon or Germanium.
Module III
Draw the block diagram of a public-address system and specify the functions of
each.
Draw the circuit diagram of an RC phase shift oscillator and explain the need of
each component.
OR
With suitable circuit diagram explain how a Zener diode can be used as a voltage
regulator. Differentiate between line regulation and load regulation.
Module IV
Draw the functional block diagram of an operational amplifier. Define any two
parameters and specify its ideal values.
Draw circuit diagram and derive expressions for gain of inverting and non-
inverting amplifier using Op-Amp.
OR
Explain the working of digital multimeter with a block diagram.
Draw the block diagram of Digital Storage Oscilloscope and explain the working
Module V
Explain satellite communication system with block diagram.
Explain advantages and disadvantages of satellite communication. Specify one
frequency band used for satellite communication.
OR
Draw block diagram and explain functioning of superheterodyne receiver.
Write the principle of frequency modulation and list the advantages of FM over
AM.
Module VI
What is meant by critical angle? What is its significance in optical fiber
communication?
Draw and explain functional block diagram of cellular communication system
OR
Use block diagram representation to explain the functioning of DTH.
With the help of suitable diagrams, explain the working of CCTV. Give one

application.
oR KK (ಎ

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