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is presently the Principal of Technical Teachers Training Institute, Chandigarh. He holds a Masters Degree in Electrical Engineering from University of Bristol, U.K. Professor Raina joined Technical Teachers Training Institute, Chandigarh in 1970 as Professor of Electrical Engineering. Earlier he had worked as engineer and manager in the industry in India and in U.K. He has been in technical education administration and management for many years. At Technical Teachers Training Institute, Chandigarh, Professor Raina has made major contribution in the fields of Curriculum Development, technical teacher training and development of teaching-learning materials. He has written text books on "Transmission & Distribution of Electrical Power and Electrical Engineering Materials. In addition, he has developed instructional materials in a number of topics/subjects in both print and non-print form. He has written a large number of technical papers. Professor Raina is Fellow of the Institution of Engineers (India).

is Professor and Head of Electrical Engineering Department of Technical Teacher`s Training Institute, Chandigarh. He holds a B.E. degree from Jadavpur University, M.E. degree from Bengal Engineering College, Howrah, and a Ph.D. degree from BITS, Pilani. He had his practical training in the Electricity Board and a Transformer factory in the Netherlands. He was exposed to Curriculum Development and Technical Teacher Training in Huddersfield, England. Later, he went to England on a Commonwealth Education Fellowship to attend a six month's course on Educational Technology. He has authored textbooks on Electrical Machines and Electrical Engineering Drawing and co-authored Textbooks on Electrical Engineering Materials and Electrical Design Estimation and Costing. Professor Bhattacharya is Fellow in the Institution of Engineering (India) and the Institution of Electronics and Telecommunication Engineers (India).