Engineering maths by bs great and aptitude by Nemo Singh and engineering mechanics by ss bhavikatti

Below are the best recommended books for your preparation

Design of Machine Elements - Machine design - V.B. Bhandari

Engineering Mechanics - Engineering Mechanics by Bhavikatti, Engineering Mechanics by Beer and Johnston, Engineering Mechanics by R K Rajput

Fluid Mechanics - Fluid Mechanics by R K Bansal, Fluid & Hydraulics- Modi and seth

Heat Transfer - Heat and Mass Transfer by J P Hollman and R C Sachdeva,Heat Transfer by Cengel and Holman

Industrial Engineering - Industrial Engineering by O P Khanna, Buffa and Sarin

Manufacturing Engineering - Production Technology: Manufacturing Processes, Technology and Automation by R.K. Jain.

Strength of Materials - Strength of Materials - Gere & Timoshenko

Thermal Science - Engineering Thermodynamics by P.K. Nag

Thermo Dynamics - Engineering Thermodynamics by P K Nag and Rajput

Thermodynamics by Cengel.

Theory of Machines - Theory of machines by Ratan

Vibrations - Mechanical Vibration by Grover

Good luck!!