Download PTU (I.K.Gujral Punjab Technical University (IKGPTU)) B-Tech (Bachelor of Technology) (AR)- Automation-And-Robotics 2020 December 3rd Sem 63002 Electronics Devices And Digital Circuits Previous Question Paper
Total No. of Pages : 02
Total No. of Questions : 18
B.Tech.(Automation & Robotics) (201 2 & Onwards) (Sem.?3)
ELECTRONICS DEVICES AND DIGITAL CIRCUITS
Subject Code : BTAR-302
M.Code : 63002
Time : 3 Hrs. Max. Marks : 60
INST RUCT ION TO 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
Answer briefly :
1.
What are the applications of monostable multivibrator?
2.
Why is master slave flip flop preferred to use?
3.
What is the Mod number of 5 bit counter?
4.
What happens to drain current of p-channel JFET when positive voltage is apply on its
gate?
5.
What is thermal runaway process?
6.
State the advantages of negative feedback in amplifiers.
7.
What is operating point? Why is it necessary to stabilize it?
8.
What is the most important application of Schmitt trigger?
9.
Define CMRR.
10. What do you mean by voltage to current converter?
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SECTION-B
11. Implement BCD to 7-segment decoder using 4 line to 16 line decoder.
12. Draw divide by 7 asynchronous up counter using T flip flop. Write its truth table also.
13. Convert JK flip flop to SR flip flop.
14. What is rectification? Explain operation of half wave rectifier circuit with neat and clean
waveforms.
15. Discuss application of op-amp as an instrument amplifier.
SECTION-C
16. Explain the principle and working of n-channel MOSFET in detail with the help of suitable
diagrams.
17. Explain IC 555 as stable multivibrator.
18. Explain operation of master slave flip flop in detail.
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 post was last modified on 13 February 2021