Reference books:

Basic Mechanical Engineering 2013
by Pravin Kumar

Mechanical Engineering (With Experiments) 2013
by Dr. D.S. Kumar

Theory of Machines 2005
by R.S. Khurmi

A Handbook for Mechanical Engineering February 2012
by ME Team

Design Data Handbook for Mechanical Engineering in SI and Metric Units 2013
by K. Mahadevan and K. Balaveera Reddy

 

Exam preparation books:

GATE Guide Mechanical Engineering 201629 March 2015
by GKP

MCQ: IES/GATE/PSUs: Mechanical Engineering 2014
by MADE EASY Team

DRDO, ISRO: Previous Solved Papers: Mechanical Engineering 2015
by MADE EASY Team

SSC Junior Engineer Mechanical Engineering Recruitment Exam Guide 2015
by Disha Experts

ESE-2016: Mechanical Engineering Conventional Solved Paper I 2015
by MADE EASY Team