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!!