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10030
Reg. No.: Name:
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY

FIRST/SECOND SEMESTER B.TECH DEGREE SPECIAL EXAMINATION, SEPT 2016
Course Code: EC100
Course Name: BASICS OF ELECTRONICS ENGINEERING
Max. Marks: 100 Duration: 3 Hours

PART A

Answer ALL questions. Each question carries 2 marks

1. Draw the symbol and write the general specifications of the following
a) Resistor
b) Loudspeaker

. Write any four applications of electronics in the field of medical science.
. What is inductance? Give at least two applications of inductor?
. Differentiate between intrinsic and extrinsic semiconductors

What is base width modulation in a transistor?

Write the type number of the following
a) Medium power transistor

b) High frequency low power transistor
c) Power transistor

d) Silicon diode

7. What is the role of filters in rectifiers? List the different types of filters.
8. What is the need of biasing in transistor circuits?

9. What is the need for feedback in oscillators? Explain the criteria for sustained oscillation?
10. What are the advantages of DSO over analog CRO?

11. Write the truth table and symbol for EX-NOR gate and EX-OR gate.

12. Compare the characteristics of ideal and real op-amps.

13. What is the frequency deviation and modulation index for FM

14. Compare AM and FM.

15. What are the elements of a satellite transponder?

16. What are the merits and demerits of GEO satellites?

17. Distinguish between HLR and VLR in GSM.

18. Why the refractive index of core in optical fiber is greater than cladding.
19. Write the advantages and disadvantages of optical communication.

20. What are the merits of DTH over cable TV?

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