HCS Electrical Eng Mains 2021 Paper (33A) – Section A & B

Haryana Government Jobs Engineer 2021

  • Year 2021
  • Conducted By Haryana Government
  • Questions 16
  • Maximum Marks 200
  • Duration 3 Hours
  • Languages English & Hindi

Exam Details

Detail Information
Examination Electrical Engineering
Year 2021
Conducting Body Haryana Government
Paper Electrical Engineering / 33A
Subject Electrical Engineering
Duration 3 Hours
Maximum Marks 200
Number of Questions 16
Question Type Mixed

This document presents the Electrical Engineering paper (33A) from the 2021 HCS Ex.Br. & Other Allied Services Mains. Page 1 provides exam metadata: two sections, 200 marks, 3 hours, and that candidates must answer twelve questions with Q1 and Q9 compulsory. Section A features a circuit-analysis style problem involving a long-closing switch and a capacitor voltage v_c, along with a framing of a waveform-drawing task for signals x1(t) and x2(t). Page 2 contains Section A questions in OCR-repaired form, including a circuit/energy problem and waveform construction tasks. The OCR is bilingual in parts, with English and Hindi content. The questions emphasize RC circuit expressions, energy rate in resistors, and waveform generation for step and ramp signals.

Major Topics Covered

  • Electrical Engineering
  • Circuit analysis
  • RC circuit
  • Capacitor voltage
  • Energy in resistors
  • Switching circuits
  • Waveforms
  • Step function u(t)
  • Ramp function r(t)
  • Unit step function
  • Unit ramp function
  • Signal processing basics
  • Fig. 1 circuit
  • Energy rate calculation
  • Compulsory questions (Q1, Q9)
  • Question paper structure
  • HCS Mains 2021
  • Electrical Engineering paper 33A
  • Bilingual exam content

Why This Paper is Important

  • Useful for Electrical Engineering 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

Instructions

  • 2021 ELECTRICAL ENGINEERING इलेक्ट्रिकल इंजीनियरिंग រ សំគ្រេចផ Maximum Marks : 200 \textcolor{red}{\mathbf{Time:3~hours}} is and a millimental and dolive off \top तीर हा तोडीपक अपी कहा पर गयी प्रयोगका अधिकतम अंक : 200 समय : 3 घंटे ] sonabalas (1) 064 and mino Instructions ( निर्देश) : है हैं कि समय सकती हैं।
  • अपने के प्रसन्न के अपने में अपनीए के मुल्ती किया 0004 100 = 1 19815 This paper is divided into two Sections, Section-A and Section-B. (i) ये प्रश्नपत्र दो खंडों में विभाजित है, खंड-A और खंड-B I Each Section contains eight questions. (ii) प्रत्येक खंड में आठ प्रश्न हैं। A candidate has to attempt twelve questions. (iii) एक परीक्षार्थी को बारह प्रश्नों का उत्तर लिखना है। Question Nos. 1 and 9 are compulsory and out of the remaining, any (iv) ten are to be attempted choosing five from each Section. प्रश्न संख्या 1 और 9 अनिवार्य हैं और शेष प्रश्नों में से किन्हीं दस का उत्तर लिखना है, प्रत्येक खंड से पाँच-पाँच प्रश्नों को हल करना है। - 1333 Question Nos. 1 and 9 consist of five parts each. Each part will be of (v) 6 marks. Word limit will be 150 (in relevant subjects only). प्रश्न संख्या 1 और 9 के पाँच-पाँच भाग हैं।
  • प्रत्येक भाग के लिए 6 अंक निर्धारित हैं।
  • शब्द संख्या 150 तक सीमित है (मात्र सम्बद्ध विषयों में)। [1 - 1] :: [3] :: [3] inst Remaining questions will be of 14 marks each. (vi) शेष प्रश्न 14 अंकों के प्रति प्रश्न होंगे।
  • सामान्य कार्य का प्रश्न का कि सामन्य (1) प्रश्न किया (1) प्राप्त क Electrical Engineering/33A \mathbf{1} ASE\gaineening (P.T.O.

Questions (page 2)

Q1. (a) 1

(a) 1(a) In the circuit of Fig. 1, the switch has been closed for a long time. Find the expression for vc as the switch is thrown open. What is the rate of energy consumption in the 400 Ω resistance at t = 0+?
6 आकृति-1 के परिपथ में, स्विच लंबे समय के लिए बंद किया गया था। जैसे ही स्विच को चालू किया जाता है, ve के लिए अभिव्यक्ति बताइए। t = 0+ पर 400 Ω प्रतिरोध में ऊर्जा खपत की दर क्या है? t = 0 400~Ω 2 μF 100 V Fig. 1 / आकृति-1

(b) 1(b) Draw the waveform of the following signals:
(i) x1(t) = r(t) - r(t-1) - u(t-1)
(ii) x2(t) = -u(t+1) + r(t+1) - r(t-1) - u(t-1)
where u(t) and r(t) are step and ramp signals respectively.

  • (a) 1(a) In the circuit of Fig. 1, the switch has been closed for a long time. Find the expression for vc as the switch is thrown open. What is the rate of energy consumption in the 400 Ω resistance at t = 0+?
    6 आकृति-1 के परिपथ में, स्विच लंबे समय के लिए बंद किया गया था। जैसे ही स्विच को चालू किया जाता है, ve के लिए अभिव्यक्ति बताइए। t = 0+ पर 400 Ω प्रतिरोध में ऊर्जा खपत की दर क्या है? t = 0 400~Ω 2 μF 100 V Fig. 1 / आकृति-1
  • (b) 1(b) Draw the waveform of the following signals:

Q6. 6 निम्न सिग्नलों में तरंग प्रकार (waveform) तैयार कीजिए:
(i) x1(t) = r(t) - r(t-1) - u(t-1)
(ii) x2(t) = -u(t+1) + r(t+1) - r(t-1) - u(t-1)
जहाँ, u(t) एवं r(t) क्रमशः स्टेप एवं रैम्प सिग्नल हैं।

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Frequently asked questions

Which questions are compulsory?

Questions 1 and 9 are compulsory.

How many questions are in each section?

Eight questions per section.

How many questions must a candidate attempt?

Twelve questions in total.

From each section, how many questions must be answered?

Five questions from each section.

What is the maximum marks of the paper?

200 marks.

What is the duration of the exam?

3 hours.

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