This download link is referred from the post: PTU B.Tech 5th Semester Last 10 Years 2011-2021 Previous Question Papers|| Punjab Technical University
Roll No. Total No. of Pages : 02
Total No. of Questions : 18
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B.Tech. (Automation & Robotics) (Sem.-5)
ELECTRONICS DEVICES AND CIRCUITS
Subject Code : BTAR-501-18
M.Code : 78215
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.
SECTION-A
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Write briefly :
- Define current gain, f3, in CE configuration.
- What is meant by Gate — Source threshold voltage of an FET?
- What are the applications of switching regulators?
- Write a short note on voltage follower!
- Define slew rate.
- Draw pin diagram of IC 555 timer.
- List any three advantages of A to D converter.
- What is the importance of sample and hold circuits.
- Discuss the need of multiplexer.
- Write a short note on VCO
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SECTION-B
- Describe the operation of common drain FET amplifier and derive the equation for voltage gain.
- Write a brief note on binary ripple counters.
- Draw circuit diagram of 555 timer for astable multivibrator. Explain its working.
- Explain the difference between the gated SR latch and gated D latch.
- Draw circuit diagram of Schmitt trigger circuit and explain operation with input and output waveform.
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SECTION-C
- Explain and draw the structure of enhancement type MOSFET.
- Explain precision half wave and full wave rectifiers in detail.
- Explain the working of mono stable multivibrator with its circuit diagram and output waveform.
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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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This download link is referred from the post: PTU B.Tech 5th Semester Last 10 Years 2011-2021 Previous Question Papers|| Punjab Technical University