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EndsemDec 20252019 patternSE E&TC

Electronics Circuits SPPU Endsem Question Paper Dec 2025

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

Open the PDFMost repeated Electronics Circuits questions
Subject code
204181
Pattern
2019 pattern
Exam
Endsem
Session
Dec 2025
Max. marks
70
Time
2½ Hours
Semester
III
Paper code
[6582]-26

Printed for: S.E. (Electronics /E &TC /Electronics (VLSI Design & Tech.)/E.C

Instructions to the candidates

  1. Answer Q.1 or Q.2, Q.3 or Q.4, Q.5 or Q.6, Q.7 or Q.8.
  2. Figures to the right indicate full marks.
  3. Assume suitable data, if necessary.
  4. Neat diagram must be drawn wherever necessary.

Questions

  1. Q1

    1. a)

      Define Voltage regulation. Explain Concept of Low drop out Voltage regulator.

      Also asked:May 2024

      [6]
    2. b)

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

      [6]
    3. c)

      Draw and explain with Block diagram Switch Mode Power Supply (SMPS).

      Also asked:May 2024

      [6]

  2. Q2

    1. a)

      Draw and explain the block diagram of Power Supply.

      Also asked:May 2024

      [6]
    2. b)

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

      [6]
    3. c)

      Write a Short note on “Current boosting Voltage regulator”.

      [6]

  3. Q3

    1. a)

      Draw Block diagram of OP-AMP. And explain the function of each block.

      Also asked:May 2025 ·May 2024

      [6]
    2. b)

      Define the following Characteristics of OP-AMP i) Input offset Current ii) Input offset voltage iii) Slew Rate

      [6]
    3. c)

      Compare Concept of open loop and Close loop configuration of OP-AMP.

      [5]

  4. Q4

    1. a)

      State Ideal and Typical values of OP-AMP parameters (IC 741).

      Also asked:May 2025 ·May 2024

      [6]
    2. b)

      Draw the equivalent circuit of OP-AMP with ideal transfer curve.

      [6]
    3. c)

      Explain the need of level shifting in OP-AMP. 2

      [5]

  5. Q5

    1. a)

      Draw and explain non-Inverting amplifier with its input and output waveforms.

      Also asked:May 2024

      [6]
    2. b)

      Design a Practical differentiator circuit for the input signal having maximum frequency of operation 150 Hz.

      Also asked:May 2024

      [6]
    3. c)

      Draw and explain Instrumentation amplifier circuit using three OP-AMP.

      Also asked:May 2025

      [6]

  6. Q6

    1. a)

      Compare Inverting and Non-Inverting amplifier in OP-AMP.

      Also asked:May 2024

      [6]
    2. b)

      Design a Practical Integrator circuit to operate at f = 2 KHz and gain equal to 4.

      Also asked:May 2024

      [6]
    3. c)

      Draw and explain Zero Crossing detector using OP-AMP.

      [6]

  7. Q7

    1. a)

      Draw and explain V to I Converter using grounded load using OP- AMP.

      Also asked:May 2024

      [5]
    2. b)

      Explain the disadvantages of binary weighted resistor circuit over R/2R DAC using OP-AMP.

      Also asked:May 2024

      [6]
    3. c)

      With the help of neat block diagram explain operation of PLL.

      Also asked:May 2024

      [6]

  8. Q8

    1. a)

      Draw and explain I to V Converter using OP-AMP.

      Also asked:May 2024

      [5]
    2. b)

      Draw and explain the circuit of flash type ADC using OP-AMP.

      [6]
    3. c)

      Define the following specifications of ADC i) Resolution ii) Accuracy iii) Quantization errors 

      [6]