Important Questions in SPECIAL ELECTRICAL MACHINES EE2403 subject for NOV/DEC 2011 ANNA UNIVERSITY EXAMINATIONS FOR FINAL YEAR EEE STUDENTS


Important Questions in  SPECIAL ELECTRICAL MACHINES EE2403 EE 2403 
subject for NOV/DEC 2011 ANNA UNIVERSITY EXAMINATIONS FOR FINAL YEAR EEE STUDENTS


EE2403 - SPECIAL ELECTRICAL MACHINES

UNIT I
1.   Derive the expression for open circuit emf of a synchronous reluctance motor.
2.   Explain the phasor diagram and characteristics of synchronous reluctance motor
3.   Draw and explain the construction and working principle of synchronous reluctance motor and   mention the different between axial and radial air gap motor.
4.   Explain the synchronous reluctance hybrid motors
UNIT II
1.   Explain the construction and various modes of excitation of PM Stepper motor
2.   Explain the characteristics of stepper motor
3.   Describe the operation of a VR type stepper motor. Also explain about micro stepping
4.   Explain in detail about the micro processor control of stepper motor.
UNIT III


1.   Draw and explain four converter topologies for a 3ph SRM. Write the merits and demerits of each.
2.   Explain with neat diagram the constructional details and working principle of switched reluctance motor
3.   Describe the hysteresis type and PWM type current regulator for 1 phase of a switched reluctance motor with relevant circuit diagrams
4.   With neat diagram explain the micro processor based control of switched reluctance motor
UNIT IV
1.   Describe the torque equation and EMF equation of the PMBL DC motor
2.   Explain the principle of operation of PMBL DC motor
3.   Explain the operation of power controller of PMBL DC motor.
4.   Explain the commutation process for 180 degree magnet arc and 120 degree phase current of 3ph PMBL DC motor.

UNIT V
1.   Derive the emf and torque equation of PMSM
2.   Explain the principle of operation of PMSM in detail
3.   Explain the working of micro processor based control of PMSM.
4.   Explain the phasor diagram of PMSM
Important Questions in SPECIAL ELECTRICAL MACHINES EE2403 subject for NOV/DEC 2011 ANNA UNIVERSITY EXAMINATIONS FOR FINAL YEAR EEE STUDENTS Reviewed by Rejin Paul on 10:15 AM Rating: 5

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