Kerala University 2007-2nd Sem B.Tech Computer Science and Engineering Combined First and - university paper
(Pages : 2) 1760
Reg. No. Name:.
Combined First and Second Semester B.Tech. Degree Examination, May 2007
BASIC ELECTRONICS ENGINEERING (2003 Scheme)
Time: 3 Hours Max. Marks : 100
PART-A
(Answer all questions. Each question carries 4 marks.)
1. How are carbon film resistors colour coded ? Give colour band of 8.22 5% resistors.
2. Define depletion region. How is it formed ? What is the relationship between the width depletion region and doping ?
3. Draw the Drain and transfer characteristics and symbol of a n-channel FET.
4. Define bandwidth of an amplifier. Draw the frequency response of a RC coupled amplifier.
5. How ICs are classified according to the number of components used ? How NAND gates can be used to realise OR gates ?
6. What are the selection criteria of a transducer ? What is a loud speaker ?
7. Draw the block schematic of a power supply.
8. What is an operating system ? Explain its need and list few operating system.
9. Briefly explain the principle of cable TV.
10. List the advantages of optical fibres and its few applications.
PART - B
(Answer any two questions from each Module. Each question carries 10 marks)
11. a) With necessary diagram explain the construction, working, rating and
application of electrolytic capacitors.
b) Briefly describe any one type of variable capacitors.
12. a) Explain the VI characteristics of zener diode, b) Explain the breakdown mechanism of diode.
13. Briefly describe how NPN transistor work as an amplifier. Compare the 3 different transistor configurations.
14. a) With necessary diagram explain the working of a bridge rectifier, b) Compare the different rectifiers.
15. Explain the working of a single ended "class A power amplifier. Differentiate class A, class B, class A B power amplifiers.
16. Draw the constructional details of a carbon microphone. Explain the working and list few advantages.
17. Draw the block schematic of superheterodyne receiver. Explain its working.
18. Explain the basic principles of colour PAL TV system. List the colour TV standards.
19. Explain with a block schematic, typical satellite communication link. How it differs from microwave link ?
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