bids are invited for close loop speed control of dc motor coupled with separately excited dc generator fed from single or three phase thyristor bridge fully controlled converters using armature voltage and field control , speed control of separately excited dc motor coupled with separately excited dc generator drive fed from igbt or mosfet based four quadrant chopper with the provision of braking for the dc motor , v by f control for three phase induction motor drive coupled with dc machine with torque sensor and speed encoder also with the provision of braking for the ac motor with different braking methods , dsp or fpga based pmsm motor drive test bench coupled with dc machine and torque sensor and encoder , bldc motor drive , study of buck converter circuit , study of boost converter circuit , study of the v vs i characteristics of scrtriac igbt and mosfet total quantity : 13