University Karnataka Department of Pre University Education Course & Year II PUC Subject Electronics Download Model Question Paper Syllabus Reduced  Syllabus 2020-21 Document Type PDF Official Website http://pue.kar.nic.in/home.asp

## PUE PUC II Electronics Model Question Paper

Karnataka Department of Pre University Education (PUE) Second Year PUC Electronics Model Question Paper 2020-21 for reduced syllabus.

## PUC II Electronics Model Questions

Part-A:
Answer ALL questions. 10 × 1 = 10
1. Name the voltage controlled device.
2. In which region of characteristics a transistor behaves as a closed switch?
3. Name the biasing circuit which gives the excellent stabilization.
4. What is faithful amplification?
5. Name the transistor amplifier which gives output 1800 phase shift with the input voltage.
6. Mention any one application of comparator.
7. Write the expression for voltage gain of positive feedback amplifier.
8. Mention the speed of radio waves through free space.
9. What is amplitude modulation?
10. What is a bit?

Part-B:
Answer any FIVE questions. 5 × 2 = 10
11. Determine value of ID given IDSS = 4 mA, VGS = -2V and VP = -5V.
12. Write the steps involved in drawing DC equivalent circuit of an amplifier.
13. Draw the block diagram of op-amp.
14. Determine the output voltage of a non-inverting amplifier.
15. Write the circuit symbol and electrical equivalent circuit of a crystal.
16. Define critical frequency and skip distance.
17. Realize XOR gate using basic gates.
18. Mention any two applications of gray codes.

Part-C
Answer any FIVE questions 5 × 3 = 15
19. Define drain resistance (rd) and trans-conductance (gm) and amplification factor (µ) in JFET.
20. With the circuit diagram of CE mode arrive suitable expressions to draw DC load line.
21. Discuss about frequency response curve of CE amplifier at different frequencies.
22. Write the block diagrams for different types of transistor coupled amplifiers.
23. An amplifier with Zi =1 k, has a voltage gain A = 1000. If a negative feedback of B = 0.01 is applied to it, what shall be the input impedance of the feedback amplifier?
24. Derive an expression for the output of op-amp inverting amplifier.
25. Write a note on D layer, E layer and F layer.
26. Write min term designation table for three input variables

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