PARTHA KUMAR GANGULY is Associate Professor in the Department of Electrical Engineering, Shekhawati Engineering College, Dundlod, Jhunjhunu, Rajasthan. Earlier, he has worked as Manager of Transformer Division in Bharat Electronics Ltd., a public sector enterprise. With nearly four decades of teaching and industrial experience, he is the recipient of ‘Vishwakarma Award’ on product development from Ministry of Defence Production, Government of India. He has attended the ICQC International Forum on Quality in Delhi (in 1990) as well as the training program in National Institute of Industrial Engineering (NITIE), Powai, Mumbai followed by Management Development Program in Hyderabad. Apart from this, he is an active member of The Institution of Engineers (India) (IEI). His fields of interest include principle of electrical engineering, electronics, electric drive and control, utilization of electric power and industrial power electronics.