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Reg No.:

Max. Marks: 100

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Name:

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY

FIRST/SECOND SEMESTER B.TECH DEGREE EXAMINATION, MAY 2019

Course Code: EC100
Course Name: BASICS OF ELECTRONICS ENGINEERING

PARTA

Answer all questions, each ೮೦171055 marks.
Discuss any two applications of electronics from each of the following fields:
(a) industry and instrumentation.
(b) medicine
Draw the energy band diagram of conductors, semiconductors and insulators.
Also compare the energy band gap between them.
Draw the Block diagram of a public addressing system and explain.
Define the terms CMRR and slew rate. Give its value for an ideal op-amp.
Explain the concept of modulation and different modulation techniques.
What are geostationary satellites? Explain.

What is meant by
a) hand-off
b) Total internal reflection

നടയാ] ist ती the major advantages गणता खला. पनी are the

11

a)
b)

a)

b)

a)
0)

sources and detectors used in optical fibre communication system?

PART B

Answer six questions, one full question from each module and carries10marks.

Module 1
How an electromagnetic relay is different from contactors.

Explain any two type of fixed resistors with necessary diagrams.
OR
Draw and explain the construction of a wet electrolytic capacitor.

What is the basic principle of transformer? Mention the important applications
of transformer.

Module 11

Draw and explain the forward and reverse characteristics of a PN junction

diode.
Differentiate between avalanche and zener breakdown.

OR

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Duration: 3 Hours

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