Analog and Digital Electronics 2025 — MAKAUT · ESC-301 · Mid Sem PYQ with solutions

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Maulana Abul Kalam Azad University of Technology

Solutions

22 answers across 3 groups

Try each question first, then open it to check your answer.

Group AVery Short Answer Type Question · answer any 10 · 1 mark each

  1. I

    The functional difference between an S-R flip-flop and a J-K flip-flop is that

    aJ-K flip-flop is faster than S-R flip-flopbJ-K flip-flop has a feedback pathcJ-K flip-flop accepts both inputs equals to 1dJ-K flip-flop does not require external clockFree sample

    Answer: c) J-K flip-flop accepts both inputs equals to 1

    Explanation

    The primary functional improvement of a J-K flip-flop over an S-R flip-flop is that it resolves the undefined/invalid state condition when both inputs are high (1). When J=1 and K=1, the J-K flip-flop simply toggles its previous output state.

  2. II

    Which of the following represents range of frequency measured by ADC?

    aBandwidthbThreshold frequencycPeak frequencydNone of the mentioned
  3. III

    What is the maximum efficiency of a class B power amplifier?

    a50%b90%c25%d78.5%
  4. IV

    How many Half adders required to add two 8 bit numbers?

    a8b15c10d2
  5. V

    The invalid state for S-R latch occurs when S and R are

    aboth highbboth lowcs=1 high, R= lowdS=, R= high
  6. VI

    Which A/D converter is considered to be simplest, fastest and most expensive?

    aServo converterbCounter type ADCcFlash type ADCdnone of the above.
  7. VII

    Where does the Q point lie for class B amplifier?

    aActivebCut offcSaturationdBetween saturation and active
  8. VIII

    Which of the following combinations cannot be combined into K-map groups?

    aOverlapping combinationsbDiagonal cornerscCorners in the same columndCorners in the same row
  9. IX

    A D flip-flop can be used as

    adivider circuitbdifferentiatorcdelay switchdtoggle circuit
  10. X

    The fastest logic gate family is

    aCMOSbECLcTTLdRTL.
  11. XI

    For a Class B amplifier, the utilized load power is 300W and the DC power is 500W, find efficiency.

    a30%b60%c90%d100%
  12. XII

    An example of weighted code is

    a2421bGRAYcXS3dAll of these

Group BShort Answer Type Question · answer any 3 · 5 marks each

  1. 2

    What is Multiplexer ? Design 4:1 multiplexer using basic logic gates.

  2. 3

    Distinguish between latch and flip-flop. Write down the difference between combinational and sequential logic circuits.

  3. 4

    What is the function of comparator in analog to digital converter and write down the applications of analog to digital converter.

  4. 5

    What do you mean by race around condition and how we can overcome it?

  5. 6

    Calculate the frequency of 4 bit ripple counter if the time period of last flip-flop is 64 microsecond.

Group CLong Answer Type Question · answer any 3 · 15 marks each

  1. 7

    What do you mean by power amplifier ? What are the different types of power amplifier? Explain the operation of Class B push-pull amplifier? What is crossover distortion?

  2. 8

    Explain the working of a R-2R Ladder type DAC with a neat circuit diagram.

  3. 9

    Draw and explain Master and Slave JK flip-flop.

  4. 10

    Design a MOD 8 asynchronous UP/DOWN counter using JK flip-flop.

  5. 11

    Why does the dual slope ADC provide excellent noise rejection of AC signal whose periods are integral multiples of the integration time? Find the resolution of a 12 bit DAC converter. What are the advantages and disadvantages of R-2R ladder DAC.

About this paper

The MAKAUT Analog and Digital Electronics (ESC-301) 2025 Mid Sem previous year question paper, set in semester 3. Download the verified PDF or read it online, then check your answers against the worked solutions above.

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Why solve Analog and Digital Electronics PYQs?

Frequently asked questions

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What is the subject code for Analog and Digital Electronics?

ESC-301 is the MAKAUT subject code for Analog and Digital Electronics.

Which exam is this Analog and Digital Electronics question paper from?

The MAKAUT 2025 Mid Sem exam, semester 3. A student shared it, and it was checked before publishing.

Which branches is this Analog and Digital Electronics paper for?

It's a common paper for 4 B.Tech branches: Computer Science and Engineering, Computer Science and Engineering (Data Science), Information Technology and Computer Science and Engineering (Artificial Intelligence and Machine Learning). Every branch gets the same questions.

Where can I find more ESC-301 question papers?

On the Analog and Digital Electronics subject page, which collects every year's papers along with notes and the syllabus.

Are there solutions for this paper?

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