Reg No.:

12109

Name:

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY

FIRST/SECOND SEMESTER B.TECH DEGREE EXAMINATION, JULY 2018

Max. Marks: 100

b)

b)

Course Code: EC100
Course Name: BASICS OF ELECTRONICS ENGINEERING

PARTA
Answer all questions, each carries 5 marks
Write four important milestone developments in the evolution of electronics and
also give typical applications of electronics in different fields.

Differentiate between intrinsic and extrinsic semiconductors also plot the V-I
characteristics of a silicon PN junction diode.

Draw and explain the basic components of a public address system.

What are universal gates? Why are they called so? List out the important
properties of an ideal operational amplifier.

Define modulation. What are the different types of analog modulation schemes?
Explain the need for modulation.

What is the super-heterodyne principle used in communication system. What are
the typical frequencies used in AM and FM?

List out the major advantages of optical fiber communication system.

Explain the different components in CCTV system.

PART B
Answer six questions,one full question from each module and carries10marks
Module I
Explain the principle of operation of transformer. What are the basic
specifications of a transformer?

What are the different types of capacitors based on the dielectric material used
also explain the working principle of an electrolytic capacitor with suitable
sketches.

OR
With neat diagrams explain the principle and working of electromagnetic relays.
What are the different classifications of resistors and also mention the importance
of tolerance.Find the resistance value a resistor with the following colour code-
Yellow,violet, gold and brown.

Module 11

Explain the input and output characteristics of common emitter amplifier and
also draw its frequency response.

OR

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Duration: 3 Hours

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