Electrical Drive And Control 3rd MJ13 080120013
| B.E/B.TECH. DEGREE EXAMINATION, MAY/JUNE 2013 Third Semester Mechanical Engineering 080120013-ELECTRICAL DRIVES AND CONTROL (Regulation 2008/2010) ANNA UNIVERSITY SYLLABUS - Click Here Download PDF File - Click Here PART A-(10*2=20 marks) 1. What are types of electrical drives? 2. List the factors to be considered for the selection of electrical drives. 3. Draw speed-torque characteristics during regenerative braking of induction motor. 4. What are the types of electric braking of electric motor? 5. State the principle in DOL for 3-phase induction motor. 6. What is the basic principle in starting 3-phase induction motor using rotor resistance starter? 7. Draw the block diagram of phase controlled rectifier fed DC drives. 8. Draw the speed-torque characteristics of DC series motor by armature resistance method. 9. Draw the block diagram of conventional scherbius system. 10. What are the variable frequency AC drive applications? PART B-(5*16=80 marks) 11. (a) Explain various classes of motor drives. Or (b) Describe the section of motor rating for continuous duty load. 12. (a) Explain speed-torque characteristics of different types of load with graph. Or (b) Explain with speed-torque characteristics of DC series motor under dynamic braking. 13. (a) Describe with diagram working of 3-point starter for DC shunt motor. Or (b) With diagram explain auto transformer starter for three phase induction motor. 14. (a) With circuit describe DC motor Ward-Leonard control system. Or (b) Explain first quadrant chopper control of separately excited motor for continuous conduction. 15. (a) Explain voltage/frequency control of 3-phase induction motor. Or (b) Describe Kramer system slip power recovery system of 3-phase induction motor.  |
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