Download PTU B-Tech EEE 2020 Dec 3rd Sem 76464 Analog Electronics Question Paper

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Roll No. | | Total No. of Pages : 02

Total No. of Questions : 18

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B.Tech. (Electrical & Electronics / Electronics & Electrical) (2018 Batch)

(Sem. - 3)

ANALOG ELECTRONICS

Subject Code : BTEEE-302-18

M.Code : 76464

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Time : 3 Hrs. Max. Marks : 60

INSTRUCTIONS TO CANDIDATES :

1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students have to attempt any TWO questions.

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SECTION-A

Write briefly :

1. Define Slew Rate.
2. What is maximum collector efficiency of transformer coupled Class A power amplifier?
3. Open loop gain of amplifier is 60000 and closed loop gain with negative feedback is 300. If there is 10% distortion without feedback calculate distortion with feedback.

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4. Draw VI characteristics of BJT.
5. Differentiate between D-MOSFET and E-MOSFET.
6. What is meant by Gain Bandwidth Product?
7. What is Faithful Amplification?
8. Draw High Frequency model of MOSFET.

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9. A transformer coupled Class A large signal amplifier has maximum and minimum values of collector emitter voltage of 25 V and 2.5 V. Determine its collector efficiency.
10. What is the use of the heat sink in power amplifiers?

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SECTION-B

11. Discuss the methods to improve CMRR.

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12. Mention the features and advantages of the wein bridge oscillator.
13. Prove that Maximum conversion efficiency of Class A transformer coupled amplifier is 50%.
14. Discuss the MOSFET characteristics in depletion mode.
15. Discuss the factors involved in the selection of I_C, R_C and R_E for a single stage common emitter BJT amplifier circuit, using voltage divider bias.

SECTION-C

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16. What are Active Filters? Explain any two.
17. Compare the performance characteristics of three BJT configurations.
18. Derive the expression for voltage gain of differential amplifier with two op-amps.

NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student.

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