1. Velalar College of Engineering and Technology, Thindal, Erode-638012, Tamilnadu, India
2. Mahendra Educational Institutions, Mallasamudram-637503, Tamil Nadu, India
3. Department of Energy and Drive Systems, University of Applied Sciences, Ulm, Germany
4. Department of Physics, Periyar University, Salem-636011, Tamil Nadu, India
5. Selvam College of Technology, Namakkal-637003, Tamil Nadu, India