B.E./B.Tech. DEGREE EXAMINATION, MAY/ JUNE 2007. Third Semester Electronics and Communication Engineering ELECTRICAL ENGINEERING Time: Three hours Maximum: 100 marks PART A – (10x 2 = 20 marks) Answer ALL questions. 1. Write the expression for determining real, reactive and apparent power in a three phase circuit. 2. Define voltage regulation. 3. Write the speed equation of a dc machine. 4.