Download PTU B.Tech 2021 Jan Automation-And-Robotics 5th Sem 78215 Electronics Devices And Circuits Question Paper

Download PTU (Punjab Technical University) B.Tech (Bachelor of Technology) / BE (Bachelor of Engineering) 2021 January Automation-And-Robotics 5th Sem 78215 Electronics Devices And Circuits Previous Question Paper

Roll No.
Total No. of Pages : 02
Total No. of Questions : 18
B.Tech. (Automation & Robotics) (Sem.?5)
ELECTRONICS DEVICES AND CIRCUITS
Subject Code : BTAR-501-18
M.Code : 78215
Time : 3 Hrs. Max. Marks : 60
INST RUCT IONS T O CANDIDAT ES :
1 .
SECT ION-A is COMPULSORY cons is ting of TEN questions carrying TWO marks
each.
2 .
SECT ION-B c ontains F IVE questions c arrying FIVE marks eac h and s tud ents
have to atte mpt any FOUR q ues tions.
3 .
SECT ION-C contains THREE questions carrying T EN marks e ach and s tudents
have to atte mpt any T WO questio ns.
SECTION-A
Write briefly :
1)
Define current gain, , in CE configuration.
2)
What is meant by Gate ? Source threshold voltage of an FET?
3)
What are the applications of switching regulators?
4)
Write a short note on voltage follower.
5)
Define slew rate.
6)
Draw pin diagram of IC 555 timer.
7)
List any three advantages of A to D converter.
8)
What is the importance of sample and hold circuits.
9)
Discuss the need of multiplexer.
10) Write a short note on VCO
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SECTION-B
11) Describe the operation of common drain FET amplifier and derive the equation for
voltage gain.
12) Write a brief note on binary ripple counters.
13) Draw circuit diagram of 555 timer for astable multivibrator. Explain its working.
14) Explain the difference between the gated SR latch and gated D latch.
15) Draw circuit diagram of Schmitt trigger circuit and explain operation with input and
output waveform.
SECTION-C
16) Explain and draw the structure of enhancement type MOSFET.
17) Explain precision half wave and full wave rectifiers in detail.
18) Explain the working of mono stable multivibrator with its circuit diagram and output
waveform.
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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