Download PTU (I.K.Gujral Punjab Technical University (IKGPTU)) B-Tech (Bachelor of Technology) (EEE)- Electrical And Electronics Engineering 2020 December 4th Sem 77606 Digital Electronics Previous Question Paper
Roll No.
Total No. of Pages : 02
Total No. of Questions : 18
B.Tech. (Electrical & Electronics) (2018 Batch) (Sem.?4)
DIGITAL ELECTRONICS
Subject Code : BTEE-401-18
M.Code : 77606
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 :
Q1. Define Noise Margin?
Q2. State the different classification of binary codes.
Q3. State the commutative property of Boolean algebra.
Q4. What is Propagation Delay?
Q5. What is a Karnaugh Map?
Q6. Give the comparison between synchronous & Asynchronous sequential circuits.
Q7. State and prove De Morgan's theorem.
Q8. Obtain the canonical sum of products of the function Y = AB + ACD.
Q9. What is EEPROM?
Q10. Which gates are called as the Universal Gates? What are its advantages?
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SECTION-B
Q11. Simplify the given expression AB + (AC)' + AB'C (AB + C).
Q12. Explain the flip-flop excitation tables for JK flip-flop.
Q13. State the postulates and theorems of Boolean algebra.
Q14. Design and explain a comparator to compare two identical words.
Q15. Explain in detail about Race around condition.
SECTION-C
Q16. Determine the prime implicants of the function
F (W,X,Y,Z) = _ (1,4,6,7,8,9,10,11,15)
Q17. Explain with neat diagrams TTL.
Q18. Explain the working of BCD Ripple Counter with the help of state diagram and logic
Diagram.
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