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Posted By: gladys Member Level: Bronze Posted Date: 16 May 2008
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2006 Calicut University B.Tech Electronics & Communications Engineering BASIC ELECTRONICS Question paper
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COMBINED FIRST AND SECOND SEMESTER B.Tech (ENGINEERING)
DEGREE EXAMINATION, DECEMBER 2006
EC 04 108 – BASIC ELECTRONICS
[EC, BM, BT, AI, IC]
[2004 admissions]
Time: Three Hours Maximum: 100 Marks
Answer all questions
Each correct answer carries 5 marks
1. W hat is electron ballistics?
2. How does multimeter measure voltage? Explain.
3 What are the characteristics of inductor?
4. Bring out the differences in the reverse bias characteristics of ordinary junction diode and zener diode. Why do the differences exist?
5. What is the effect of Q-point location on allowable signal swing?
6. How is Q-point chosen? Explain
7. Why is transformer utility factor of half wave rectifier and center tapped full wave rectifier lesser than bridge type rectifier?
8. What is the drawback of C filter? How is it rectified?
Answer all questions
Each correct answer carries 15 marks
1. Explain the principle of operation of pentode.
OR
2. What are the two focusing used in CRTs? Explain.
3. What are the different types of capacitors? Explain their characteristics.
OR
4. Draw the two types of biased clippers and explain their operation.
5. Analyse the operation of BJT graphically.
OR
6. What are the different compensation circuits used in BJT amplifiers? Explain
any two.
7. Define and compare the following for a HWR and a center tapped FWR :
Ripple factor , PIV , efficiency and rectification factor
OR
8. What is pi-filter ? Emphasize its importance.
.
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