PTU B.Tech 4th Semester Last 10 Years 2009-2019 Previous Question Papers|| Punjab Technical University
B.Tech.(EIE) (2011 & Onwards) (Sem.-4)
ANALOG ELECTRONICS/APPLIED ELECTRONICS
Subject Code : EC-202 M.Code: 57510
Time: 3 Hrs. Max. Marks : 60
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INSTRUCTIONS TO CANDIDATES :
- SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.
- SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions.
- SECTION-C contains THREE questions carrying TEN marks each and students have to attempt any TWO questions.
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SECTION-A
1) Write briefly :
- Explain Miller effect.
- Can Zener diode act as voltage regulator
- Define transistors. Explain the early effects in transistor.
- Explain gain margin.
- Describe multi stage amplifier.
- Define PIV of diode in a rectifier circuits.
- Explain why two transistors are used in Wein bridge oscillator?
- What is Hartley oscillator?
- Explain the T model of a bipolar transistor.
- What is negative bandwidth in an amplifier?
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SECTION-B
- Explain RC phase shift oscillator and its output frequency of oscillation.
- How cross over distortion be minimized. Explain?
- Explain the components of current in an NPN transistor.
- Elaborate class B push- pull amplifier and sketch its circuits.
- Describe the effect of negative feedback on the bandwidth and distortion in an amplifier.
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SECTION-C
- Describe tuned amplifier. Its merits and applications.
- Explain sustained oscillation in LC oscillator.
- Write a short note on :
- Hybrid pi CE transistor model
- Oscillator
- Amplifier
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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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