FEE PYQ 2021-22 AKTU (KEC101) Question Paper

AKTU · BTECH · Semester 1, 2 · Fundamentals of Electronics Engineering · Session 2021-22 · PYQ

AKTU Fundamentals of Electronics Engineering (KEC101) previous year question paper 2021-22 for B.Tech Semester 1/2. Covers Semiconductor Diode and…

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Fundamentals of Electronics Engineering AKTU syllabus

  1. Unit 1: Semiconductor Diode and Applications
  2. Unit 2: Transistors — BJT and FET
  3. Unit 3: Operational Amplifiers
  4. Unit 4: Digital Electronics
  5. Unit 5: Fundamentals of Communication Engineering

Questions in Fundamentals of Electronics Engineering AKTU PYQ 2021-22

  1. Q1a. Determine β, if IE = 5 mA, IC = 4.95 mA. (2 marks, 2021-22)
  2. Q1b. Define transconductance of JFET. (2 marks, 2021-22)
  3. Q1c. What do you mean by CMRR? (2 marks, 2021-22)
  4. Q1d. Differentiate the BJT and JFET. (2 marks, 2021-22)
  5. Q1e. (1010110100.110)2 = ( )16? (2 marks, 2021-22)
  6. Q1f. Differentiate between Avalanche and Zener breakdown. (2 marks, 2021-22)
  7. Q1g. Simplify the Boolean function using Boolean Algebra theorems: A'B'C' + A'BC' + AB'C' + ABC' (2 marks, 2021-22)
  8. Q1h. Differentiate between Microprocessor and Microcontroller. (2 marks, 2021-22)
  9. Q1i. What is Doping? What is the need of Doping? (2 marks, 2021-22)
  10. Q1j. What is RADAR? Write down two applications of RADAR. (2 marks, 2021-22)
  11. Q2a. What do mean by clipper? Draw the output waveform of the given circuit. (10 marks, 2021-22)
  12. Q2b. Draw the Structure of Depletion type N-MOSFET. Explain its operation with characteristic graph. (10 marks, 2021-22)
  13. Q2c. (i) Subtract using 10's complement: (9754)10 – (364)10 (ii) Subtract using 1's complement: (10111)2 – (110011)2 (10 marks, 2021-22)
  14. Q2d. Describe AM modulation and Demodulation technique with adequate diagram. (10 marks, 2021-22)
  15. Q2e. Write down the characteristics of ideal OP-AMP. Derive the expression for gain of OP-AMP as non-inverting amplifier. (10 marks, 2021-22)
  16. Q3a. Define Voltage Multiplier. Draw the circuit and explain the working of voltage Tripler and Quadrupler circuit. (10 marks, 2021-22)
  17. Q3b. Draw the V-I characteristics of Zener diode. Determine the range of Vin that will maintain VL at 8V and not exceed the maximum power rating of the Zener diode. (R=82Ω, Vz=8V, Pzmax=400mW, RL=0.22kΩ) (10 marks, 2021-22)
  18. Q4a. Describe the construction and working of a NPN transistor in CE configuration with respect to size and doping. Also, draw the input and output characteristic graph. (10 marks, 2021-22)
  19. Q4b. Define α and β with respect to BJT and derive the relationship between them. A transistor having α=0.975 and ICBO=10µA is operated in CE mode. If the base current is 250µA. Calculate IE and IC. (10 marks, 2021-22)
  20. Q5a. (i) Draw and explain the working of Integrator and Differentiator using OP-AMP. (ii) Write Short note on basic elements of communication system. (10 marks, 2021-22)
  21. Q5b. (i) Determine the output voltage of an OPAMP for V1=150µV and V2=140µV. Differential gain Ad=4000 and CMRR=100. (ii) Determine the output of the circuit. Given V1=V2=0.15V (Op-Amp circuit: Rf=330kΩ, R1=33kΩ, R2=10kΩ) (10 marks, 2021-22)
  22. Q6a. (i) Describe briefly Satellite Communication. (ii) Explain Positive and Negative Clamper using suitable circuit diagram and input/output waveform. (10 marks, 2021-22)
  23. Q6b. An audio frequency signal 5Sin(2π×500t) is used to amplitude modulate a carrier of 25Sin(2π×10⁵t). Calculate: (i) Modulation index (ii) Amplitude of each side band (iii) Total power (iv) Bandwidth (v) Transmission efficiency (10 marks, 2021-22)
  24. Q7a. Minimize using K-map and realize using NOR gates only. F(A,B,C,D) = ΠM(3,4,5,7,9,13,14,15). d(0,2,8). (10 marks, 2021-22)
  25. Q7b. F(A,B,C,D,E) = Σm(0,1,2,4,5,6,10,13,14,18,21,22,24,26,29,30). Simplify the function with help of K-map and realize the simplified function using basic logic gates. (10 marks, 2021-22)

AKTU paper codes: BEC101, BEC201, KEC101, KEC201

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