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೩68 ೫೦.: Name:

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
FIRST SEMESTER B.TECH DEGREE EXAMINATION, DECEMBER 2017

Course Code: BE101-04
Course Name: INTRODUCTION TO ELECTRONICS ENGINEERING

Max. Marks: 100 Duration: 3 Hours
PART A
Answer all questions, each carries 5 marks. Marks
1 Explain the constructional details of carbon composition resistors. Mention its (5)
features.
2 Explain the V-I characteristics of a PN junction diode. How temperature (5)
influences the diode characteristics.
3 Compare CE, CB and CC configurations of transistor. (5)
Briefly explain the V-I characteristics of SCR. (5)
5 Draw the circuit diagram for the given transfer characteristics and explain its (5)
working.

6 With a neat diagram explain the working of a capacitor filter. (5)
7 Briefly explain the block diagram of function generator. (5)
8 Explain any three performance parameters of instruments. (5)
PART ए
Answer six questions, one full question from each module and carries10 marks.
Module I

9 a) Explain with necessary diagrams, construction, working and applications of (5)
electrolytic capacitors.

b) Discuss any two types of variable resistors. (5)

OR
10 a) With suitable diagram, describe the working of an electromechanical relay. (5)
b) Compare the electrical behaviour of capacitors and inductors. (5)

Module 11

11 a) Discuss the formation of “barrier potential” in ೩ PN junction. (5)
b) Explain the working principle of LED. (5)

OR
12 a) Differentiate between zener and avalanche breakdown. (5)

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