Civil Engineering Paper I (Main) 2023 — Page 1 & 2
- Year 2023
- Conducted By UPSC
- Maximum Marks 250
- Duration Three Hours Maximum Marks: 250 प्रश्न-पत्र सम्बन्धी विशेष अनुदेश कृपया प्रश्नों के उत्तर देने से पूर्व निम्नलिखित प्रत्येक अनुदेश को ध्यानपूर्वक पढ़ें : इसमें आठ प्रश्न हैं जो दो खण्डों में विभाजित हैं तथा हिन्दी और अंग्रेज़ी दोनों में छपे हुए हैं। परीक्षार्थी को कुल पाँच प्रश्नों के उत्तर देने हैं । प्रश्न संख्या 1 और 5 अनिवार्य हैं तथा बाकी प्रश्नों में से प्रत्येक खण्ड से कम-से-कम ए
Exam Details
| Detail | Information |
|---|---|
| Examination | CIVIL SERVICES (MAIN) EXAMINATION |
| Year | 2023 |
| Conducting Body | UPSC |
| Duration | Three Hours Maximum Marks: 250 प्रश्न-पत्र सम्बन्धी विशेष अनुदेश कृपया प्रश्नों के उत्तर देने से पूर्व निम्नलिखित प्रत्येक अनुदेश को ध्यानपूर्वक पढ़ें : इसमें आठ प्रश्न हैं जो दो खण्डों में विभाजित हैं तथा हिन्दी और अंग्रेज़ी दोनों में छपे हुए हैं। परीक्षार्थी को कुल पाँच प्रश्नों के उत्तर देने हैं । प्रश्न संख्या 1 और 5 अनिवार्य हैं तथा बाकी प्रश्नों में से प्रत्येक खण्ड से कम-से-कम ए |
| Maximum Marks | 250 |
This JSON captures the Civil Services Main Examination Civil Engineering Paper I (2023). Page 1 provides bilingual Hindi-English instructions, exam timing, marks, and general guidelines. Page 2 contains repaired objective_questions_preview consisting of three descriptive problems (Q1, Q10, Q11) focusing on material mechanics (Poisson's ratio and modulus of elasticity for aluminium), torsion design for a steel shaft, and a friction-related problem. The data enforces bilingual content where present, preserves numbering, and outlines SEO-ready metadata including titles, descriptions, keywords, topics, and FAQ crafted from both pages.
Major Topics Covered
- Civil Services Main Examination
- Civil Engineering
- Material Mechanics
- Tensile Testing
- Elastic Modulus
- Poisson's Ratio
- Shear Modulus
- Yield Strength
- Diameter Reduction
- Angle of Twist
- Torsion
- Torque
- Maximum Permissible Torque
- Rigid Shafts
- Friction
- Static Friction
- Coefficient of Friction
- Weight and Support Reactions
- Block on Floor
- Centre of Gravity
Why This Paper is Important
- Useful for 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 Mechanical Engineering Paper II 2025 Question Paper PDF
- UPSC Civil Services Main 2025 Civil Engineering Paper I PDF
- UPSC Civil Services Mechanical Engineering Paper II 2024 Question Paper PDF
- Mechanical Engineering Paper-II (CS Main) 2023
- UPSC Civil Services Electrical Engineering Paper I 2023 Question Paper PDF
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 जाएगी चाहे वह उत्तर अंशतः दिया गया हो ।
- प्रश्न-सह-उत्तर (क्यू.सी.ए.) पुस्तिका में खाली छोड़ा हुआ पुष्ठ 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. \boldsymbol{\mathcal{I}}
Questions (page 2)
Q2.
Q10. A solid steel shaft of diameter 65 mm is to be designed using an allowable shear stress τ_allow = 60 N/mm^2 and an allowable angle of twist per unit length θ = 1.05° per metre. Determine the maximum permissible torque that may be applied to the shaft. Take the shear modulus as 80 GPa.
Hindi: 65 mm व्यास की ठोस इस्पात शैफ्ट के अभिकल्पन के लिए अधिकतम अनुज्ञेय टॉर्क निर्धारित कीजिए; τ_allow = 60 N/mm^2 और प्रति मीटर 1.05° घूमने के लिए अधिकतम कोण। ग़ड़ाई मापक G = 80 GPa मान लीजिए।
Q3.
Q11. W 0.70 m
Hindi: Q11. W = 0.70 m
Question paper preview
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Frequently asked questions
What is the total duration of the Civil Services Main Examination paper?
Three hours.
What is the maximum marks for Civil Engineering Paper I?
250 marks.
How many questions are in the paper and how many must be attempted?
There are eight questions; a candidate must attempt five questions in total.
Which questions are compulsory?
Questions No. 1 and 5 are compulsory.
From how many sections should at least one question be attempted?
From each section, at least one question must be attempted.
In which languages are the questions printed?
Questions are printed in Hindi and English.