Engineering Services Exam 2020 Electronics & Telecommunication Paper I PDF

Central Government Jobs Engineer 2020

  • Year 2020
  • Conducted By UPSC
  • Maximum Marks 300
  • Duration Three Hours
  • Languages English

Exam Details

Detail Information
Examination Engineering Services Examination
Year 2020
Conducting Body UPSC
Paper Electronics and Telecommunication Engineering Paper - I
Subject Electronics and Telecommunication Engineering
Duration Three Hours
Maximum Marks 300
Question Type Mixed

This is the official question paper for the Engineering Services Examination (ESE) 2020, Paper I, conducted by UPSC for Electronics and Telecommunication Engineering. The paper is designed to test candidates' in-depth knowledge in the subject, with a total of 300 marks to be completed within three hours. It comprises eight questions divided into two sections, requiring candidates to attempt five questions, including compulsory questions 1 and 5, and at least one from each section. This paper is crucial for aspirants aiming for top positions in engineering services.

Major Topics Covered

  • Electronics
  • Telecommunication Engineering
  • Circuit Analysis
  • Semiconductor Devices
  • Ramp Generators
  • Transistor Circuits

Why This Paper is Important

  • Useful for Engineering Services Examination preparation
  • Helps understand the latest exam pattern
  • Useful for practice and self-assessment
  • Covers frequently asked General Studies topics
  • Helpful for analysing question trends

Related Resources

  • Engineering Services Examination 2021 Electronics and Telecommunication Engineering Paper - I
  • Engineering Services Examination 2019 Electronics and Telecommunication Engineering Paper - I
  • GATE 2020 Electronics and Communication Engineering Question Paper
  • ESE 2020 Electronics and Telecommunication Engineering Paper I Answer Key
  • ESE Electronics and Telecommunication Engineering Syllabus
  • UPSC Engineering Services Exam Syllabus
  • ESE Exam Pattern
  • UPSC Engineering Services Exam Pattern

Instructions

  • There are EIGHT questions divided in TWO sections.
  • Candidate has to attempt FIVE questions in all.
  • Questions No. 1 and 5 are compulsory and out of the remaining, THREE are to be attempted choosing at least ONE question from each section.
  • The number of marks carried by a question / part is indicated against it.
  • Wherever any assumptions are made for answering a question, they must be clearly indicated.
  • Diagrams/figures, wherever required, shall be drawn in the space provided for answering the question itself.
  • Unless otherwise mentioned, symbols and notations carry their usual standard meanings.
  • Attempts of questions shall be counted in sequential order.
  • Unless struck off, attempt of a question shall be counted even if attempted partly.
  • Any page or portion of the page left blank in the Question-cum-Answer Booklet must be clearly struck off.
  • Answers must be written in ENGLISH only.
  • Values of constants which may be required: = -1.6 \times 10-19 Coulomb Electron charge = 4\pi \times 10^{-7} Henry/m Free space permeability = (1/36\pi) \times 10^{-9} Farad/m Free space permittivity = 3 × 108 m/sec Velocity of light in free space = 1.38 \times 10^{-23} J/K Boltzmann constant = 6.626 \times 10^{-34} J-s Planck's constant

Questions (page 2)

Section A

Q1.

(a) Consider the circuit shown below. The power supply V+ has a dc value of 10 V on which is superimposed a 60 Hz sinusoid of 1 V peak amplitude, i.e. has a power supply ripple. Calculate both the dc voltage of the diode and the amplitude of the sine-wave signal appearing across it, assuming a 0.7 V drop across it at 1 mA current.

(a) For the V-I characteristics as shown below, draw the circuit model using an ideal diode.

(b) The circuit shown below is to be used as ramp generator to produce a 1 V ramp output when the input is 3 V, 0.1 ms pulse with a 1 ms interval between pulses. The supply voltage is 15 V and a load resistance of 100 kOmega is connected at the output terminals. Assume Q1 has h_{FE(min)} = 50. Determine values of R1, R2 and C1.

Question paper preview

Scanned pages 1–2 for reference. Download the official PDF for the full paper.

Page 1
Engineering Services Examination 2020 Electronics and Telecommunication Engineering Paper I page 1 instructions scan PDF download UPSC ESE
Page 2
Engineering Services Examination 2020 Electronics and Telecommunication Engineering Paper I page 1 instructions scan PDF download UPSC ESE

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Frequently asked questions

What is the name of the exam?

The exam is the Engineering Services Examination (ESE).

Which year is this question paper for?

This question paper is for the year 2020.

Who conducts the Engineering Services Examination?

The Engineering Services Examination is conducted by UPSC (Union Public Service Commission).

What is the subject of this paper?

This paper is for Electronics and Telecommunication Engineering.

What is the paper number?

This is Paper - I.

What is the maximum marks for this paper?

The maximum marks for this paper are 300.

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