Skip to content
EndsemNov 20252019 patternSE Electrical

Analog and Digital Electronics (ADE) SPPU Endsem Question Paper Nov 2025

All 8 questions from this SPPU endsem paper, as printed. Read them here or open the PDF.

Open the PDFMost repeated ADE questions
Subject code
203143
Pattern
2019 pattern
Exam
Endsem
Session
Nov 2025
Max. marks
70
Time
2½ Hours
Semester
III
Paper code
[6582]-18

Printed for: S.E. (Electrical Engineering)

Instructions to the candidates

  1. Solve Q1 or Q2, Q3 or Q4, Q5 or Q6, Q7 or Q8.
  2. Figures to the right indicate full marks.
  3. Neat diagrams must be drawn wherever necessary.
  4. Assume suitable additional data, if necessary.
  5. Use of non-programmable calculator is allowed.

Questions

  1. Q1

    1. a)

      Write a comparison between CPLD and FPGA.

      [4]
    2. b)

      Draw a circuit of basic static MOS RAM cell. Explain how information is stored in it.

      [6]
    3. c)

      State two advantages of PLD over fixed function IC and application specific IC. What is the difference between PLA, PAL and PROM.

      [8]

  2. Q2

    1. a)

      What do you mean by configurable device.

      [4]
    2. b)

      What is FPGA? Explain its basic structure.

      [6]
    3. c)

      Design a 3-bit Gray to Binary code converter. Implement it using suitable PROM. Draw the PROM table and logic Diagram.

      [8]

  3. Q3

    1. a)

      What is the role of OP-AMP as an instrumentation amplifier?

      Also asked:May 2023

      [3]
    2. b)

      Explain how OP-AMP work as a closed loop inverting amplifier, Draw neat waveforms. Also derive gain of OP-AMP for the same.

      [6]
    3. c)

      Explain with neat diagram Schmitt trigger as an application of OP-AMP.

      Also asked:Nov 2023

      [8]

  4. Q4

    1. a)

      Write classification of open loop configuration of OP-AMP? Explain any one form it.

      [3]
    2. b)

      Draw neat diagram. Explain OP-AMP as a Peak detector.

      Also asked:May 2024 ·May 2023

      [6]
    3. c)

      Explain voltage and current converter for grounded type load. 2

      Also asked:May 2023

      [8]

  5. Q5

    1. a)

      Explain the function of 78XX.

      [4]
    2. b)

      Draw and explain IC 555 as an Astable multivibrator with neat connection diagram.

      Also asked:Nov 2024 ·May 2024 ·Nov 2023 ·May 2023

      [6]
    3. c)

      Explain how triangular waveform can be generated using OP-AMP? Also draw waveform.

      [8]

  6. Q6

    1. a)

      Draw the diagram and waveform of IC 555 as monostable multivibrator.

      Also asked:Nov 2024 ·May 2024 ·Nov 2023 ·May 2023

      [4]
    2. b)

      Explain the operation of low pass filter with a neat circuit diagram.

      [6]
    3. c)

      Explain the function of LM 317 as a voltage regulator.

      Also asked:May 2025

      [8]

  7. Q7

    1. a)

      Define for half wave rectifier : i) Efficiency ii) Form factor iii) Ripple factor

      [3]
    2. b)

      Explain the working of single phase half wave rectifier with RL load with neat sketch and draw its waveform.

      Also asked:May 2025 ·Nov 2024 ·May 2024 ·Nov 2023 ·May 2023

      [6]
    3. c)

      Draw and explain three-phase bridge rectifier with R-Load. Also draw input voltage and output voltage waveform.

      [8]

  8. Q8

    1. a)

      Define for Full wave rectifier : - i) Average output voltage ii) RMS output voltage iii) Peak inverse voltage

      [3]
    2. b)

      Compare single phase half-wave and full - wave rectifier.

      Also asked:May 2025 ·Nov 2024 ·May 2024 ·Nov 2023 ·May 2023

      [6]
    3. c)

      This part has equations that don’t show as text. Open the PDF to read it.

      [8]