Osmania University (OU) 2008 B.E Computer Science BASIC ELECTRONICS - Question Paper
Code No. 4213/N
FACULTY OF ENGINEERING B.E. 2/4 (CSE) I Semester Suppl. Examination May/June - 2008 Subject: Basic Electronics
Note : Answer all questions of Part-A
Answerfive questions from Part-B.
PART - A (25 marks)
1. Define fermi level. 3
2. Explain Hall effect and its significance. 3
3. Justify the namehybrid parameters. 2
4. Which of the oscillator circuit is most stable ? Explain its circuit separation in brief. 3
5. What is the significance of gain bandwidth product ? 2
6. Explain in how many ways logic 1 can be defined ? 3
7. Define Peak Inverse voltage of a diode and give some typical values. 2
8. What are the limitations of RC type oscillators ? 3
9. What is the function of a trigger in CRO ? 2
10. Define gage factor of a strain gage. 2
11. (a) n fijiplaif Ihe-diEfeteHfe between diffusion and drift current. 3
(b) Explain the operation of a p*n junction arrive of its characteristics. 5
(c) How zener dioete is diRlreiitrbm -a? silicon diode, in respect of doping levels ? 2
.> Gormparc the advantages and disadvantages of FET and BJT. 3
(b) Explain the operation and characteristics of a zenar diode regulator. 7
13. (a) Classify negative feedback amplifiers andcompare their performance in a
tabular column. Slow;-their ideal,circuits,,, 8
(b) Explain Barkhansens criteria of oscillations. 2
14. (a) Distinguish betwemthe speeificato<3Mof an Operational amplifier and an
Instrumentation amplifier. 5
(b) Explain the circuit of Instrumentation amplifier. miU~ 5
' 15. (a) Explain the operation of LV3cah&|hsitibn its applications. 5
(b) Compare LED and LCD displays, explaining the circuit of one of them.
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16. Derive for ripply factor pf aFWR and I I WRu Define regulation. 5
(b) Explain the operation of a simple inverter circuit. 5 1 5
_ 17. Write notes on : 9 jcuboiq d.tbiwbntd nifia/lo wit tori
(a) Transistorized IC regulator
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(b) Silicon Controlled Rectifier
(c)iLissajous figuresbiiE sbo;fh s lo > * -v\:' :I j
? SlDi/iliijgO Oq\n '!H ' !; Hid
Vo\ ) n; s ]-:> j-ui
.'iijsg mmu (Ho \oyj vgnu. iml- '
C-160/500
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