Are you looking for important questions of EE2403 Special Electrical Machines for 2015 exams? Then read here to know more about EE2403 Special Electrical Machines important questions and download image files or collect texts of all important questions. These questions are very useful for the Students of B.E EEE in Semester Seven of Regulation 2008. That is final year BE EEE courses of Anna University Chennai.
Anna University Chennai
Department of B.E Electrical and Electronics Engineering
Seventh Semester
EE2403 Special Electrical Machines
November / December 2015 Exam Important Questions
(Regulation 2008)
Important Questions
Anna University, Chennai
Department of B.E-Electrical and Electronics Engineering
B.E / B.TECH DEGREE EXAMINATION Nov Dec 2015
SEVENTH SEMESTER
EE2403 Special Electrical Machines
(REGULATION 2008)
1. Describe the constructional features of axial and radial flux synchronous reluctance motors.
2. Describe in detail, the speed-torque and torque-angle characteristics of synchronous reluctance motors with phasor diagrams. (16)
3. Describe the constructional features of synchronous reluctance motor and explain its characteristics. Also draw the phasor diagram.
4. Differentiate between axial and radial air gap synchronous reluctance motors. Compare the performance of synchronous reluctance motor with switched reluctance motor
5. Discuss dual voltage driver circuit for two phase on drive of a four phase stepper motor and explain the nature of current build up in dual voltage drive.
6. (i) What is the motor torque Tm required to accelerate an initial load of 2 x 10^-4 kg-m^2 from 500 Hz to 1500 Hz. in 50 ms. The frictional torque is 0.03 Nm and step angle is 1.18 Deg. (8)
(ii) Write a detailed technical note on the bipolar drives for stepper motors. (8)
7. With a neat block diagram explain microprocessor control of stepping motor
8. Explain the working of single and multi-stack configured stepping motors
9. Describe the construction and working of rotary and linear switched reluctance motors
10. Discuss the following in switched reluctance motor.
(i) Method of rotor position sensing. (8) (ii) Seasorless operation
11. Discuss the various converter topologies for a 3 phase switched reluctance motor with merits and demerits of each. Explain any two of them.
12. With a neat block diagram, describe in detail the microprocessor based controller in switched reluctance motor.
13. (i) Explain the torque-speed characteristics of switched reluctance motors. (8)
(ii) Derive the expressions for voltage and torque of SR machines. (8)
14. Discuss the various converter topologies for a 3 phase switched reluctance motor with merits and demerits of each. Explain any two of them.
15. Discuss the following in switched reluctance motor.
(i) Method of rotor position sensing. (8)
(ii) Seasorless operation. (8)
16. Describe the construction and working of rotary and linear switched reluctance motors
17. Discuss the magnetic circuit analysis relevant to permanent magnet brushless D.C. Motor. Also
draw the characteristics
18. Sketch the structure of controller for PMBL DC motor and explain the functions of various blocks.
19. (i) Distinguish between mechanical and electronic commutators (8)
(ii) Draw the diagram of electronic commutator. Explain the operation of the same (8)
20. Derive EMF and Torque equations of permanent magnet synchronous motor (16)
Anna University Chennai
Department of B.E Electrical and Electronics Engineering
Seventh Semester
EE2403 Special Electrical Machines
November / December 2015 Exam Important Questions
(Regulation 2008)
Important Questions
Anna University, Chennai
Department of B.E-Electrical and Electronics Engineering
B.E / B.TECH DEGREE EXAMINATION Nov Dec 2015
SEVENTH SEMESTER
EE2403 Special Electrical Machines
(REGULATION 2008)
1. Describe the constructional features of axial and radial flux synchronous reluctance motors.
2. Describe in detail, the speed-torque and torque-angle characteristics of synchronous reluctance motors with phasor diagrams. (16)
3. Describe the constructional features of synchronous reluctance motor and explain its characteristics. Also draw the phasor diagram.
4. Differentiate between axial and radial air gap synchronous reluctance motors. Compare the performance of synchronous reluctance motor with switched reluctance motor
5. Discuss dual voltage driver circuit for two phase on drive of a four phase stepper motor and explain the nature of current build up in dual voltage drive.
6. (i) What is the motor torque Tm required to accelerate an initial load of 2 x 10^-4 kg-m^2 from 500 Hz to 1500 Hz. in 50 ms. The frictional torque is 0.03 Nm and step angle is 1.18 Deg. (8)
(ii) Write a detailed technical note on the bipolar drives for stepper motors. (8)
7. With a neat block diagram explain microprocessor control of stepping motor
8. Explain the working of single and multi-stack configured stepping motors
9. Describe the construction and working of rotary and linear switched reluctance motors
10. Discuss the following in switched reluctance motor.
(i) Method of rotor position sensing. (8) (ii) Seasorless operation
11. Discuss the various converter topologies for a 3 phase switched reluctance motor with merits and demerits of each. Explain any two of them.
12. With a neat block diagram, describe in detail the microprocessor based controller in switched reluctance motor.
13. (i) Explain the torque-speed characteristics of switched reluctance motors. (8)
(ii) Derive the expressions for voltage and torque of SR machines. (8)
14. Discuss the various converter topologies for a 3 phase switched reluctance motor with merits and demerits of each. Explain any two of them.
(i) Method of rotor position sensing. (8)
(ii) Seasorless operation. (8)
16. Describe the construction and working of rotary and linear switched reluctance motors
17. Discuss the magnetic circuit analysis relevant to permanent magnet brushless D.C. Motor. Also
draw the characteristics
18. Sketch the structure of controller for PMBL DC motor and explain the functions of various blocks.
19. (i) Distinguish between mechanical and electronic commutators (8)
(ii) Draw the diagram of electronic commutator. Explain the operation of the same (8)
20. Derive EMF and Torque equations of permanent magnet synchronous motor (16)
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