Ee2403- Special Electrical Machines 1l6x71
This document was ed by and they confirmed that they have the permission to share it. If you are author or own the copyright of this book, please report to us by using this report form. Report r6l17
Overview 4q3b3c
& View Ee2403- Special Electrical Machines as PDF for free.
More details 26j3b
- Words: 1,390
- Pages: 5
EE2403 Special Electrical Machines
A.R ENGINEERING COLLEGE DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING QUESTION BANK Subject Name & Code: EE2403/Special Electrical Machines Branch/Year: EEE/IV Semester
: VII
UNIT-I SYNCHRONOUS RELUCTANCE MOTORS PART - A 1. What is a Synchronous Reluctance Motor? 2. What are the types of synch. Reluctance Motor? 3. State the principle of operation of Synch. Reluctance Motor? 4.State any advantages of Synch. Reluctance Motor? 5. Write any four application of Synch. Reluctance Motor? 6. Define torque angle? 7. What is Vernier Motor? 8. Write down the important features of Vernier Motor? 9. Define reluctance torque. 10. What is meant by flux concentrating and flux focusing? 11. What are the factors to be considered while deg a verneier motor? 12. What are the applications of Vernier motor? 13. When does a PM Synchronous motor operates as a Synchronous Reluctance motor?
PART-B 1. Explain the operation and constructional features of synchronous reluctance motor. (16) 2. Explain the working principle of Vernier Motor with a neat diagram.
(16)
3. Explain the circle diagram and torque-speed characteristics of synchronous reluctance motor. (16) 4. Explain the synchronous reactance of PM Synchronous reluctance motor.
(16)
5. Describe the constructional details and working principle of Synchronous Reluctance Motor. (16) 6. Draw and explain a typical torque-speed characteristic of a Synchronous Reluctance Motor. (16) 7. a. Derive the expression for the d –axis PM Synchronous Reluctance Motor. b. Distinguish between Axial and Radial air gap motor.
(8) (8)
8. Explain the principle of operation and constructional features of different types of Synchronous Reluctance Motor. (16) 9. Derive an expression for open circuit emf of a Synchronous Reluctance Motor. A.R Engineering College, Villupuram
(16)
Page 1
EE2403 Special Electrical Machines
10. Explain the phasor diagram and characteristics of Synchronous Reluctance Motor. (16)
UNIT-II STEPPING MOTORS PART - A 1. What is a stepper motor? 2. What are the main features of stepper motor which are responsible for its wide spread use? 3. Name the different types of stepper motor. 4. Define slewing. 5. What is a slewing rate? 6. What is synchronism in stepper motor 7. What is variable reluctance stepper motor? 8. What is Permanent Magnet Stepper Motor? 9. What is Hybrid Stepper Motor? 10. What is meant by micro stepping in stepper motor? 11. What are the advantages and disadvantages of VR Stepper motor? 12. What are the advantages and disadvantages of PM Stepper motor? 13. What are the advantages and disadvantages of Hybrid Stepper motor? 14. What are the different types of drive circuits for stepper motor? 15. Name the various modes of excitation in stepping motor. 16. What is meant by power driving circuit? 17. What is logic sequencer? 18. What is lead angle? 19. Mention the application of stepper motor.
PART-B 1. Describe the operation of Variable Reluctance type Stepper Motor.
(16)
2. Draw and explain the torque pulse rate characteristics of a Stepper Motor.
(16)
3. Explain the working of Hybrid Motor with neat diagram.
(16)
4. What is stepping angle? A VR Stepper Motor has 8 poles in the stator and they have five teeth in each pole. If the rotor has 50 teeth, calculate the step angle and resolution. (16) 5. Write short notes about the drive circuits of stepping motor?
(16)
6. Explain the principle of operation and constructional features of Hybrid Motor in detail. (16) 7. Explain the construction and principle operation of VR Stepping Motor in detail. (16) 8. Describe the operation of a Variable Reluctance type Stepper Motor. Also explain about micro stepping. (16) 9. Explain torque versus stepping rate characteristics of a stepper motor. Also explain about slew range and ramping. (16) 10. a. What is stepping angle? Calculate the stepping angle for a 3 phase 24 pole PM type Stepper Motor. (10) A.R Engineering College, Villupuram
Page 2
EE2403 Special Electrical Machines
b. Write short notes on Ministep drive. UNIT-III
(6)
SWITCHED RELUCTANCE MOTORS PART - A 1. What is a Switched Reluctance Motor? 2. State the principle of operation of Switched Reluctance Motor. 3. What is rotor position sensor? 4. What is the need for shaft position sensor fro SRM? 5. Specify the function of controller circuit in SRM. 6. Differentiate SRM and VR Stepper Motor. 7. Enumerate the different power controllers used for the control of SRM 8. Write down the instantaneous torque equation of SRM. 9. What is meant by dwell in SRM? 10. State the need for non- linear analysis of switched reluctance motor. 11. Define energy ratio in SRM. 12. Are the two types of current control techniques?
PART-B 1. Describe the Hysterisis type and PWM type current regulator for one phase of a Switched Reluctance Motor with relevant circuit diagram. (16) 2. With neat diagram, explain the microprocessor based control of Switched Reluctance Motor (16) 3. a. Draw and explain the characteristics of Switched Reluctance Motor in detail. b. Explain shaft position sensing of Switched Reluctance Motor
(8) (8)
4. Explain with neat diagram, the constructio nal details and working principle of Switched Reluctance Motor. (16) 5. Explain the role of computers in the control of Switched Reluctance Motors
(16)
6. a. Write a note on power controllers used in Switched Reluctance Motor.
(8)
b. Explain the speed-torque characteristics of Switched Reluctance Motor
(8)
7. What is the necessity of converter circuits for Switched Reluctance Motor? Draw and explain different types of converter circuits in detail. (16)
UNIT-IV PERMANENT MAGNET BRUSHLESS D.C. MOTORS PART - A 1. What is Brushless PM D.C.Motor? 2. Compare conventional D.C.Motor and PMBLDC Motor. 3. Give the merits of PMBLDC Motor compared to conventional motor. 4. What are the types of PMBLDC square wave D.C.Motor? 5. State the principle of operation of PMBLDC. 6. Write down the emf and torque equation of PMBLDC Motor. A.R Engineering College, Villupuram
Page 3
EE2403 Special Electrical Machines
7. State the different types of PM. 8. Define magnetic remanence. 9. Define coercivity forces. 10. How the PMBLDC Motors are classified? 11. What are position sensors? 12. State advantages of brushless configuration. 13. Why the PMBLDC Motor is called as electronically commutated Motor? 14. Define energy product and maximum energy product of Permanent Magnet. 15. When does the demagnetization occur in PMBLDC Motor? PART-B 1. Explain the construction and working principle of operation of PMBLDC Motor with neat diagram. (16) 2. a. Describe the operation of power controllers for PMBLDC Motor with neat diagram. (8) b. Derive the Torque and EMF equations of PMBLDC Motor.
(8)
3. Explain the modes of operation of Power Controllers for PMLDC Motor with neat diagram. (16) 4. Explain with neat diagram and waveform of full wave inverter based PMBLDC Motor (16) 5. Draw and explain the speed torque characteristics o f PMBLDC Motor.
(16)
6. Draw IGBT based inverter circuit for delta connected PMBLDC Motor and sketch the firing sequence and phase current waveform for 120 0 mode. (16) 7. a. Write a note on magnetic circuit analysis in PMBLDC Motor.
(6)
b. Explain with neat diagram the working of different modes of operation in Power Controller circuit used for PMBLDC Motor. (10)
UNIT-V LINEARMOTO R PART- A 1. What is the principle of operation of linear induction motor? 2. How can the speed of a linear induction motor be controlled? 3. List some applications of linear induction motors. 4. What are the advantages and disadvantages of linear induction motor? 5. Write two types of effect in linear induction motor 6. Define transverse edge effect. 7. Define end effect. 8. What are the three types of BLDC linear motor? 9. What are the special types of DC linear motor? A.R Engineering College, Villupuram
Page 4
EE2403 Special Electrical Machines
10. List out the comparison of three BLDC linear motor.
PART - B 1. Explain the principle of operation of a linear induction motor draw its characteristics. state its important applications. (16) 2. Explain the principle of operation and constructional details of DC linear motor.
(16)
3. (a). Explain the different types of BLDC linear motors.
(8)
(b). Explain the characteristics of DC linear motor.
(8)
4. Explain the different special types of DC linear motors.
(16)
5. Explain the principle of operation and constructional details of linear synchronous Motor. (16) 6. Explain the different types of linear synchronous motor and mention its applications. (16).
A.R Engineering College, Villupuram
Page 5
A.R ENGINEERING COLLEGE DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING QUESTION BANK Subject Name & Code: EE2403/Special Electrical Machines Branch/Year: EEE/IV Semester
: VII
UNIT-I SYNCHRONOUS RELUCTANCE MOTORS PART - A 1. What is a Synchronous Reluctance Motor? 2. What are the types of synch. Reluctance Motor? 3. State the principle of operation of Synch. Reluctance Motor? 4.State any advantages of Synch. Reluctance Motor? 5. Write any four application of Synch. Reluctance Motor? 6. Define torque angle? 7. What is Vernier Motor? 8. Write down the important features of Vernier Motor? 9. Define reluctance torque. 10. What is meant by flux concentrating and flux focusing? 11. What are the factors to be considered while deg a verneier motor? 12. What are the applications of Vernier motor? 13. When does a PM Synchronous motor operates as a Synchronous Reluctance motor?
PART-B 1. Explain the operation and constructional features of synchronous reluctance motor. (16) 2. Explain the working principle of Vernier Motor with a neat diagram.
(16)
3. Explain the circle diagram and torque-speed characteristics of synchronous reluctance motor. (16) 4. Explain the synchronous reactance of PM Synchronous reluctance motor.
(16)
5. Describe the constructional details and working principle of Synchronous Reluctance Motor. (16) 6. Draw and explain a typical torque-speed characteristic of a Synchronous Reluctance Motor. (16) 7. a. Derive the expression for the d –axis PM Synchronous Reluctance Motor. b. Distinguish between Axial and Radial air gap motor.
(8) (8)
8. Explain the principle of operation and constructional features of different types of Synchronous Reluctance Motor. (16) 9. Derive an expression for open circuit emf of a Synchronous Reluctance Motor. A.R Engineering College, Villupuram
(16)
Page 1
EE2403 Special Electrical Machines
10. Explain the phasor diagram and characteristics of Synchronous Reluctance Motor. (16)
UNIT-II STEPPING MOTORS PART - A 1. What is a stepper motor? 2. What are the main features of stepper motor which are responsible for its wide spread use? 3. Name the different types of stepper motor. 4. Define slewing. 5. What is a slewing rate? 6. What is synchronism in stepper motor 7. What is variable reluctance stepper motor? 8. What is Permanent Magnet Stepper Motor? 9. What is Hybrid Stepper Motor? 10. What is meant by micro stepping in stepper motor? 11. What are the advantages and disadvantages of VR Stepper motor? 12. What are the advantages and disadvantages of PM Stepper motor? 13. What are the advantages and disadvantages of Hybrid Stepper motor? 14. What are the different types of drive circuits for stepper motor? 15. Name the various modes of excitation in stepping motor. 16. What is meant by power driving circuit? 17. What is logic sequencer? 18. What is lead angle? 19. Mention the application of stepper motor.
PART-B 1. Describe the operation of Variable Reluctance type Stepper Motor.
(16)
2. Draw and explain the torque pulse rate characteristics of a Stepper Motor.
(16)
3. Explain the working of Hybrid Motor with neat diagram.
(16)
4. What is stepping angle? A VR Stepper Motor has 8 poles in the stator and they have five teeth in each pole. If the rotor has 50 teeth, calculate the step angle and resolution. (16) 5. Write short notes about the drive circuits of stepping motor?
(16)
6. Explain the principle of operation and constructional features of Hybrid Motor in detail. (16) 7. Explain the construction and principle operation of VR Stepping Motor in detail. (16) 8. Describe the operation of a Variable Reluctance type Stepper Motor. Also explain about micro stepping. (16) 9. Explain torque versus stepping rate characteristics of a stepper motor. Also explain about slew range and ramping. (16) 10. a. What is stepping angle? Calculate the stepping angle for a 3 phase 24 pole PM type Stepper Motor. (10) A.R Engineering College, Villupuram
Page 2
EE2403 Special Electrical Machines
b. Write short notes on Ministep drive. UNIT-III
(6)
SWITCHED RELUCTANCE MOTORS PART - A 1. What is a Switched Reluctance Motor? 2. State the principle of operation of Switched Reluctance Motor. 3. What is rotor position sensor? 4. What is the need for shaft position sensor fro SRM? 5. Specify the function of controller circuit in SRM. 6. Differentiate SRM and VR Stepper Motor. 7. Enumerate the different power controllers used for the control of SRM 8. Write down the instantaneous torque equation of SRM. 9. What is meant by dwell in SRM? 10. State the need for non- linear analysis of switched reluctance motor. 11. Define energy ratio in SRM. 12. Are the two types of current control techniques?
PART-B 1. Describe the Hysterisis type and PWM type current regulator for one phase of a Switched Reluctance Motor with relevant circuit diagram. (16) 2. With neat diagram, explain the microprocessor based control of Switched Reluctance Motor (16) 3. a. Draw and explain the characteristics of Switched Reluctance Motor in detail. b. Explain shaft position sensing of Switched Reluctance Motor
(8) (8)
4. Explain with neat diagram, the constructio nal details and working principle of Switched Reluctance Motor. (16) 5. Explain the role of computers in the control of Switched Reluctance Motors
(16)
6. a. Write a note on power controllers used in Switched Reluctance Motor.
(8)
b. Explain the speed-torque characteristics of Switched Reluctance Motor
(8)
7. What is the necessity of converter circuits for Switched Reluctance Motor? Draw and explain different types of converter circuits in detail. (16)
UNIT-IV PERMANENT MAGNET BRUSHLESS D.C. MOTORS PART - A 1. What is Brushless PM D.C.Motor? 2. Compare conventional D.C.Motor and PMBLDC Motor. 3. Give the merits of PMBLDC Motor compared to conventional motor. 4. What are the types of PMBLDC square wave D.C.Motor? 5. State the principle of operation of PMBLDC. 6. Write down the emf and torque equation of PMBLDC Motor. A.R Engineering College, Villupuram
Page 3
EE2403 Special Electrical Machines
7. State the different types of PM. 8. Define magnetic remanence. 9. Define coercivity forces. 10. How the PMBLDC Motors are classified? 11. What are position sensors? 12. State advantages of brushless configuration. 13. Why the PMBLDC Motor is called as electronically commutated Motor? 14. Define energy product and maximum energy product of Permanent Magnet. 15. When does the demagnetization occur in PMBLDC Motor? PART-B 1. Explain the construction and working principle of operation of PMBLDC Motor with neat diagram. (16) 2. a. Describe the operation of power controllers for PMBLDC Motor with neat diagram. (8) b. Derive the Torque and EMF equations of PMBLDC Motor.
(8)
3. Explain the modes of operation of Power Controllers for PMLDC Motor with neat diagram. (16) 4. Explain with neat diagram and waveform of full wave inverter based PMBLDC Motor (16) 5. Draw and explain the speed torque characteristics o f PMBLDC Motor.
(16)
6. Draw IGBT based inverter circuit for delta connected PMBLDC Motor and sketch the firing sequence and phase current waveform for 120 0 mode. (16) 7. a. Write a note on magnetic circuit analysis in PMBLDC Motor.
(6)
b. Explain with neat diagram the working of different modes of operation in Power Controller circuit used for PMBLDC Motor. (10)
UNIT-V LINEARMOTO R PART- A 1. What is the principle of operation of linear induction motor? 2. How can the speed of a linear induction motor be controlled? 3. List some applications of linear induction motors. 4. What are the advantages and disadvantages of linear induction motor? 5. Write two types of effect in linear induction motor 6. Define transverse edge effect. 7. Define end effect. 8. What are the three types of BLDC linear motor? 9. What are the special types of DC linear motor? A.R Engineering College, Villupuram
Page 4
EE2403 Special Electrical Machines
10. List out the comparison of three BLDC linear motor.
PART - B 1. Explain the principle of operation of a linear induction motor draw its characteristics. state its important applications. (16) 2. Explain the principle of operation and constructional details of DC linear motor.
(16)
3. (a). Explain the different types of BLDC linear motors.
(8)
(b). Explain the characteristics of DC linear motor.
(8)
4. Explain the different special types of DC linear motors.
(16)
5. Explain the principle of operation and constructional details of linear synchronous Motor. (16) 6. Explain the different types of linear synchronous motor and mention its applications. (16).
A.R Engineering College, Villupuram
Page 5
Related Documents 171j1w
Ee2403- Special Electrical Machines 1l6x71
November 2021 0
Special Electrical Machines Ee2403.pdf 22s2w
November 2019 25
Special Electrical Machines Ppt 3y5ku
December 2019 77
Special-electrical-machines-.pdf 4m6q3g
October 2019 105
Ee6703-special Electrical Machines 4l2j1
December 2019 45