UPSC Civil Services Mechanical Engineering Paper I 2021 Question Paper PDF

Central Government Jobs Engineer 2021

  • Year 2021
  • Conducted By UPSC
  • Questions 8
  • Maximum Marks 250
  • Duration Three Hours
  • Languages English & Hindi

Exam Details

Detail Information
Examination UPSC Civil Services Main Examination
Year 2021
Conducting Body UPSC
Paper Mechanical Engineering Paper-I
Subject Mechanical Engineering
Duration Three Hours
Maximum Marks 250
Number of Questions 8
Question Type Mixed

This document contains the Mechanical Engineering Paper-I from the UPSC Civil Services Main Examination held in 2021. The paper, carrying a maximum of 250 marks, was designed to be completed within three hours. It consists of eight questions divided into two sections, with candidates required to answer five questions in total. Questions 1 and 5 are compulsory, and at least one question must be attempted from each section. The paper is printed in both Hindi and English, catering to a diverse set of candidates. This question paper is a crucial resource for aspirants preparing for the Mechanical Engineering optional subject in the UPSC Civil Services Exam, offering insights into the depth and breadth of topics covered.

Major Topics Covered

  • Mechanical Engineering
  • Cantilever Beam
  • Forces and Motion
  • Particle Dynamics
  • Acceleration
  • Velocity
  • Carbon Equivalent
  • Steel Hardening

Why This Paper is Important

  • Useful for UPSC Civil Services Main 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

  • UPSC Civil Services Main Examination 2020 Mechanical Engineering Paper-I
  • UPSC Civil Services Main Examination 2021 Mechanical Engineering Paper-II
  • IES 2021 Mechanical Engineering Paper-I
  • UPSC Civil Services Main Examination 2021 Mechanical Engineering Paper-I Answer Key
  • UPSC Civil Services Main Examination Mechanical Engineering Syllabus
  • Mechanical Engineering Dynamics Syllabus
  • Mechanical Engineering Strength of Materials Syllabus
  • Mechanical Engineering Metallurgy Syllabus

Instructions

  • पुस्तिका के मुख-पृष्ठ पर निर्दिष्ट स्थान पर किया जाना चाहिए ।
  • प्राधिकृत माध्यम के अतिरिक्त अन्य किसी माध्यम में लिखे गए उत्तर पर कोई अंक नहीं मिलेंगे ।
  • प्रश्न का उत्तर देने के लिए यदि कोई पूर्वधारणाएँ बनाई गई हों, तो उन्हें स्पष्ट रूप से निर्दिष्ट कीजिए ।
  • जहाँ आवश्यक हो, आरेखों व चित्राकृतियों को, प्रश्न का उत्तर देने के लिए दिए गए स्थान में ही बनाइए ।
  • जब तक उल्लिखित न हो, संकेत तथा शब्दावली प्रचलित मानक अर्थों में प्रयुक्त हैं ।
  • प्रश्नों के उत्तरों की गणना क्रमानुसार की जाएगी ।
  • यदि काटा नहीं हो, तो प्रश्न के उत्तर की गणना की जाएगीं चाहे वह उत्तर अंशतः दिया गया हो ।
  • प्रस्त-सह-उत्तर (क्यू.सी.ए.) पुस्तिका में खाली छोड़ा हुआ पृष्ठ या उसके अंश को स्पष्ट रूप से काटा जाना चाहिए ।

  • There are EIGHT questions divided in TWO SECTIONS and printed both in HINDI and in ENGLISH.
  • Candidate has to attempt FIVE questions in all.
  • Questions no. 1 and 5 are compulsory and out of the remaining, any 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.
  • Answers must be written in the medium authorized in the Admission Certificate which must be stated clearly on the cover of this Question-cum-Answer (QCA) Booklet in the space provided.
  • No marks will be given for answers written in a medium other than the authorized one.
  • 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 (QCA) Booklet must be clearly struck off.

Questions (page 2)

Section A

Q1.

(a) चित्र में प्रदर्शित एक प्रास (कैन्टीलीवर) धरन के लिए A पर आधारी बल क्या होगा ? धरन के भार को नगण्य मान लीजिए।

What is the supporting force system at A for the cantilever beam shown in the figure? Neglect the weight of the beam.

(b) x-y समतल में गतिमान एक कण का वेग समय t = 3. 65 s पर 6. 12hat{i} + 3. 24hat{j} m/s द्वारा निर्धारित है। अगले 0. 02 s पर्यन्त इसका औसत त्वरण 4hat{i} + 6hat{j} m/s^2 है। समय t = 3. 67 s पर कण का वेग v तथा त्वरण सदिश एवं वेग सदिश के बीच का कोण heta ज्ञात कीजिए । The velocity of a particle, moving in the x-y plane is given by 6. 24hat{j} m/s at time t = 3. 65 s. Its average acceleration, during the next 0. 02 s is 4hat{i} + 6hat{j} m/s^2. Determine the velocity v of the particle at t = 3. 67 s, and the angle heta between the acceleration vector and the velocity vector at t = 3. 67 s.

(c) कार्बन समतुल्य (CE) क्या है ? इस्पात का कार्बन समतुल्य, कठोरीकरण ताप उपचार को कैसे प्रभावित करता है ?

What is carbon equivalent (CE) ? How does the carbon equivalent of a steel affect the hardening heat treatment?

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UPSC Civil Services Main Examination 2021 Mechanical Engineering Paper I page 1 instructions scan PDF download
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UPSC Civil Services Main Examination 2021 Mechanical Engineering Paper I page 1 instructions scan PDF download

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Frequently asked questions

What is the name of the exam?

The exam is the UPSC Civil Services Main Examination.

What is the year of this question paper?

This question paper is from the year 2021.

Who conducts the Civil Services Main Examination?

The examination is conducted by the Union Public Service Commission (UPSC).

What is the subject of this paper?

This paper is for Mechanical Engineering, specifically Paper-I.

What is the maximum marks for this paper?

The maximum marks for Mechanical Engineering Paper-I is 250.

What is the time allowed to complete this paper?

The time allowed to complete the paper is three hours.

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