t PREVIOUS YEARS’ SOLVED QUESTION PAPERS Also Helpful for GAIL, BARC, HPCL, BHEL, ONGC, SAIL, DRDO & Other PSU’s ri s h MECHANICAL ENGINEERING n S G a’ 2019 E s N I R I R E This book is a one-stop solution for GATE aspirants to crack the exam. The book includes previous years’ GATE questions E S segregated topic-wise along with exam analysis at the beginning of every unit. Detailed step-wise solutions are E P provided for all the questions. It will help the students to get an idea about the pattern and weightage of questions R N E appeared in GATE exam. V I I G O WHAT THE FACULTIES SAY ABOUT THIS BOOK... QU N US The language used in the book is simple and easy-to-understand. I would strongly recommend this book for the students who E Y E are preparing for GATE or other technical examinations. SE Dr. R.S. Walia, Associate Professor, Delhi Technological University, New Delhi TIOAR N Tashpei rbaonotsk. cTohnet saoinlus ttihoen ss oalruet dioonnse o ifn p vreervyio suysst yeemaarst iGc AmTaEn qnueer satniodn us soenfu ml feocrh tahnei csatul denengtin teoe urinndge arsntda nwdi ltl hbee bvaesriyc ucsoenfcuel pfotsr .G TAhTisE N PS’ S T I AO book is also very useful for the faculties involved in GATE coaching. PL S PREVIOUS YEARS’ Dr. Rajesh Kumar, Associate Professor, Delhi Technological University, New Delhi EV RE E The approach of the subject which is presented in the book is very well explained to solve problems themselves, which will SD T SOLVED QUESTION PAPERS bring confidence to the reader and drive success for their career. The book is very useful for students who prepare for GATE exam. E MECHANICAL Dr. Arun K. K., Assistant Professor (Senior Grade), Kumaraguru College of Technological, Coimbatore, Tamil Nadu D Language used in book is very simple and easy to understand. It is very good book for the GATE aspirants to get complete idea U about types of questions asked in GATE exam. The solutions are detailed and given in step-by-step manner for better ENGINEERING understanding of students. T I Dr. Andriya Narasimhulu, Assistant Professor, Netaji Subhas Institute of Technology, Dwarka, New Delhi M T Language used in book is easy, smooth and in good flow. The book will help the aspirants immensely to get an idea about the E P types of questions asked in GATE exam. The solutions are self explanatory and given step-wise for better understanding. C Dr. Uday Pratap Singh, Assistant Professor, JSS Academy of Technical Education, Noida ( U.P.) H A 2 0 1 9 A e E h N T t crack the gate series IC A k A U H I G H L I G H T S L c D E N a A Includes more than 28 years’ GATE questions G r R arranged chapter-wise IN C G Detailed solutions for better understanding E E Includes latest GATE solved question papers with detailed analysis R I N G in.pearson.com 2 0 1 9 About Pearson Pearson is the world’s learning company, with presence across 70 countries worldwide. Our unique insights and world-class expertise comes from a long history of working closely with renowned teachers, authors and thought leaders, as a result of which, we have emerged as the preferred choice for millions of teachers and learners across the world. We believe learning opens up opportunities, creates fulfilling careers and hence better lives. We hence collaborate with the best of minds to deliver you class-leading products, spread across the Higher Education and K12 spectrum. Superior learning experience and improved outcomes are at the heart of everything we do. This product is the result of one such effort. Your feedback plays a critical role in the evolution of our products and you can contact us - [email protected]. We look forward to it. A01_GATE_978-93-325-7606-3_PRELIM.indd 1 6/16/2017 6:06:40 PM This page is intentionally left blank. A01_GATE_978-93-325-7606-3_PRELIM.indd 2 6/16/2017 6:06:40 PM GATE Previous Years’ Solved Question Papers Mechanical Engineering A01_GATE_978-93-325-7606-3_PRELIM.indd 3 6/16/2017 6:06:40 PM Copyright © 2018 Pearson India Education Services Pvt. Ltd Published by Pearson India Education Services Pvt. Ltd, CIN: U72200TN2005PTC057128 No part of this eBook may be used or reproduced in any manner whatsoever without the publisher’s prior written consent. This eBook may or may not include all assets that were part of the print version. The publisher reserves the right to remove any material in this eBook at any time. ISBN 978-93-530-6130-2 First Impression Head Office: 15th Floor, Tower-B, World Trade Tower, Plot No. 1, Block-C, Sector 16, Noida 201 301, Uttar Pradesh, India. Registered Office: 4th Floor, Software Block, Elnet Software City, TS-140, Block 2 & 9, Rajiv Gandhi Salai, Taramani, Chennai 600 113, Tamil Nadu, India. Fax: 080-30461003, Phone: 080-30461060 in.pearson.com, Email: [email protected] A01_GATE_978-93-325-7606-3_PRELIM.indd 4 6/16/2017 6:06:40 PM Contents Preface ix Reviewers x Syllabus: Mechanical Engineering xi Important Tips for GATE Preparation xiii Detailed Analysis of GATE 2018 Papers xiv-a Solved Papers 2018 xiv-b Detailed Analysis of GATE 2017 Papers xv Solved Papers 2017 xvi Detailed Analysis of GATE 2016 Papers lv Solved Papers 2016 lix Detailed Analysis of GATE 2015 Papers cxv Solved Papers 2015 cxix Unit 1: Production 1.1 Chapter 1: Casting 1.3 Chapter 2: Welding 1.22 Chapter 3: Metal Cutting 1.38 Chapter 4: Machining 1.66 Chapter 5: Metal Forming 1.84 Chapter 6: Sheet Metal 1.97 Chapter 7: Metrology 1.110 Chapter 8: Advanced Machine Methods 1.127 Chapter 9: Non-traditional Machining Methods 1.136 Unit 2: IM and OR 2.1 Chapter 1: Linear Programming 2.3 Chapter 2: Pert and CPM 2.8 Chapter 3: Queuing Theory 2.14 Chapter 4: Inventory Control 2.18 Chapter 5: Transportation 2.25 Chapter 6: Production Planning and Control 2.28 Chapter 7: Forecasting 2.31 Chapter 8: Line Balancing 2.34 Chapter 9: Scheduling 2.35 Chapter 10: Sequencing 2.39 A01_GATE_978-93-325-7606-3_PRELIM.indd 5 6/16/2017 6:06:40 PM vi | Contents Chapter 11: Assignment 2.41 Chapter 12: Material Requirement and Planning 2.42 Unit 3: Fluid Mechanics and Turbo Machinery 3.1 Chapter 1: Property of Fluids 3.3 Chapter 2: Fluid Statics 3.7 Chapter 3: Fluid Kinematics 3.14 Chapter 4: Fluid Dynamics 3.22 Chapter 5: Laminar Flow 3.33 Chapter 6: Turbulent Flow 3.38 Chapter 7: Boundary Layer 3.43 Chapter 8: Turbo Machinery 3.47 Unit 4: Heat Transfer 4.1 Chapter 1: Conduction 4.3 Chapter 2: FINS and THC 4.20 Chapter 3: Convection 4.27 Chapter 4: Radiation 4.34 Chapter 5: Heat Exchangers 4.43 Unit 5: Thermodynamics 5.1 Chapter 1: Zeroth Law and Basic Concepts 5.3 Chapter 2: Work and Heat 5.6 Chapter 3: First Law of Thermodynamics 5.10 Chapter 4: Second Law of Thermodynamics 5.18 Chapter 5: Entropy 5.24 Chapter 6: Property of Pure Substances 5.31 Chapter 7: Availability 5.36 Chapter 8: Air Cycles 5.39 Chapter 9: Psychrometry 5.52 Chapter 10: Rankine Cycle 5.62 Chapter 11: Gas Turbines 5.76 Chapter 12: Refrigeration 5.86 Chapter 13: Internal Combustion Engines 5.88 Unit 6: Strength of Materials 6.1 Chapter 1: Simple Stresses 6.3 Chapter 2: Complex Stresses 6.9 A01_GATE_978-93-325-7606-3_PRELIM.indd 6 6/16/2017 6:06:40 PM Contents | vii Chapter 3: SFD and BMD 6.14 Chapter 4: Centroids and Moment of Inertia 6.19 Chapter 5: Pure Bending 6.20 Chapter 6: Shear Stress in Beams 6.25 Chapter 7: Springs 6.26 Chapter 8: Torsion 6.28 Chapter 9: Slopes and Deflections 6.34 Chapter 10: Thin Cylinders 6.39 Chapter 11: Column and Struts 6.42 Chapter 12: Propped and Fixed Beams 6.44 Chapter 13: Strain Energy 6.46 Unit 7: Machine Design 7.1 Chapter 1: Static Loading 7.3 Chapter 2: Fatigue 7.8 Chapter 3: Bolted, Riverted and Welded Joints 7.13 Chapter 4: Gears 7.19 Chapter 5: Rolling Contact Bearings 7.24 Chapter 6: Sliding Contact Bearings 7.27 Chapter 7: Brake 7.29 Chapter 8: Clutches 7.32 Unit 8: Theory of Machines 8.1 Chapter 1: Analysis of Planner Mechanism 8.3 Chapter 2: Dynamic Analysis of Single Slider-crank Mechanism 8.17 Chapter 3: Gear and Gear Trains 8.20 Chapter 4: Fly Wheels 8.27 Chapter 5: Mechanical Vibrations 8.31 Unit 9: Engineering Mechanics 9.1 Chapter 1: Engineering Machines 9.3 Unit 10: Material Science 10.1 Chapter 1: Material Science 10.3 A01_GATE_978-93-325-7606-3_PRELIM.indd 7 6/16/2017 6:06:40 PM This page is intentionally left blank. A01_GATE_978-93-325-7606-3_PRELIM.indd 8 6/16/2017 6:06:40 PM Preface Graduate Aptitude Test in Engineering (GATE) is one of the primarily tests for various undergraduate subjects— Engineering/Technology/Architecture and postgraduate level for Science. The GATE examination pattern has undergone several changes over the years—sometimes apparent and sometimes subtle. It is bound to continue to do so with changing technological environment. GATE Previous Years’ Solved Question Papers for Mechanical Engineering acts as a practice material for GATE aspir- ants to strengthen their conceptual understanding and application skills. The book includes more than 27 years, GATE questions segregated topic-wise along with exam analysis which is provided at the beginning of every unit. This book helps the GATE aspirants to get an idea about the pattern and weightage of questions asked in GATE examination. Owing to multifaceted opportunities open to any good performer, the number of aspirants appearing for the GATE examination is increasing significantly every year. Apart from giving the aspirant a chance to pursue an M.Tech. from institutions such as the IITs /NITs, a good GATE score can be highly instrumental in landing the candidate a plush public sector job, as many PSUs are recruiting graduate engineers on the basis of their performance in GATE. Salient Features ●● Includes more than 27 years’ GATE questions arranged chapter-wise. ●● Detailed solutions for better understanding. ●● Includes latest GATE solved question papers with detailed analysis. ●● Free online mock test based on GATE examination pattern for practice. Despite of our best efforts, some errors may have inadvertently crept into the book. Constructive comments and suggestions to further improve the book are welcome and shall be acknowledged gratefully. A01_GATE_978-93-325-7606-3_PRELIM.indd 9 6/16/2017 6:06:40 PM