The best study books for preparing GATE in mechanical engineering are as below.Engineering MathematicsHigher Engineering Mathematics by B.S.GrewalIntermediate Mathematics, S.chand publications by B.V.Sastry , K.Venkateswarlu ( if i remember ) both the volumes.Probability , statistics and queuing theory by S.C.Gupta & V.K.KapoorNumerical Methods by S.S.SastryApplied Mechanics and DesignEngineering MechanicsEngineering Mechanics by BhavikattiEngineering Mechanics by Beer and Johnston,Engineering Mechanics by R K RajputStrength of MaterialsStrength of Materials by Gere and Timoshenko, B C Unamia, Sadhu Singh, RamamruthamStrength of Materials by Beer Johnston and R K BansalTheory of MachinesTheory of Machines by R S Khurmi, Malik and GhoshTheory of machines by RatanVibrationsMechanical Vibration by GroverDesignMachine Design by Shigley and V B BhandariMachine Design by Khurmi, BhandariFluid Mechanics and Thermal SciencesFluid MechanicsFluid Mechanics by R K BansalHeat-TransferHeat and Mass Transfer by J P Hollman and R C SachdevaHeat Transfer by Cengel and HolmanThermodynamicsEnginnering Thermodynamics by P K Nag and RajputThermodyanmics by Cengel.ApplicationsIC Engine by M L Mathur and R P SharmaRefrigeration and Air Conditioning by C P Arora and DomkundwarManufacturing and Industrial EngineeringEngineering MaterialsMaterials Science by Callister and NarulaMaterial Science by WD Callister and I P SinghWeldingWelding by ParmarComputer Integrated ManufacturingCAD/CAM by Zimmer and Grover, Ibrahim ZeidProduction, planning and Operation ResearchProduction Engineering by Kalpkjian Schmid, Amitabh Ghosh and A K MalikIndustrial Engineering by O P Khanna, Buffa and SarinIndustrial Research by MahajanManufacturing by Ghosh and Mallik, KalpakjianOperations Research by Kanti SwarupManufacturing by Refer HMT book and Hajra ChoudaryOther booksPrevious GATE Question papers(Made Easy Publishers,GK publishers etc)Previous Engg Services question papers(Made Easy Publishers)Aptitude Test-D R ChoudharyMultiple choice questions by Timothy . J . Williams , TMH publicationsIn this post, I tried to compile the results to the best possible way to help students. If you find something wrong or missing please do not hesitate to drop a comment. Your suggestion and comments would help thousands of students across the nation.