Skip to content
CampusPrep
EX-802 (D) · Application of AI in Electrical/Electronics Engg./Unsolved PYQ Paper

B SPECIAL MACHINE - MAY 2024 Question Paper

  1. Unit 5
    7 Marks
    aExplain the construction and working principle of hybrid stepper motor with neat diagrams.
  2. Unit 5
    7 Marks
    bDraw and explain in detail the static and dynamic characteristics of stepper motor.
  3. Unit 5
    7 Marks
    aExplain 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.
  4. Unit 5
    7 Marks
    bDraw the cross sectional view of switched reluctance motor and explain the principle of operation. State the advantages of switched reluctance motor.
  5. Unit 5
    14 Marks
    A SRM with 6 stator poles and 4 rotor poles has a stator pole arc of 30° and rotor pole arc is 32°. The aligned inductance is 10.7 mH and unaligned inductance is 1.5 mH. Saturation can be neglected. Calculate the instantaneous torque when the rotor is 30° before the aligned position and phase current is 6A. What is the maximum energy conversion for one stroke, if the current is limited to 7A? Determine the average torque corresponding to this energy conversion.
  6. Unit 5
    7 Marks
    aDerive an expression for permeance coefficient of PMBLDC motor.
  7. Unit 5
    7 Marks
    bState the advantages of BLMP DC motor over conventional DC motor.
  8. Unit 5
    7 Marks
    aDiscuss the use of Hall sensors for position sensing in PMBLDC motor with necessary block diagram.
  9. Unit 5
    7 Marks
    bWith a neat sketch explain the torque-speed characteristics of AC servomotor.
  10. Unit 5
    7 Marks
    aExplain the methods of energy conversion via Electric field with examples of Electrical Machines.
  11. Unit 5
    2 Marks
    b-iDiscuss in detail the following: i) B-H relationship
  12. Unit 5
    2 Marks
    b-iiDiscuss in detail the following: ii) Leakage flux
  13. Unit 5
    2 Marks
    b-iiiDiscuss in detail the following: iii) Fringing
  14. Unit 5
    1 Marks
    b-ivDiscuss in detail the following: iv) Stacking factor
  15. Unit 5
    7 Marks
    aDerive the EMF equation of Permanent Magnet Synchronous Motor (PMSM).
  16. Unit 5
    7 Marks
    bWith necessary phasor diagram and circle diagram, describe the torque speed characteristics of PMSM.
  17. Unit 5OR Choice
    7 Marks
    iWrite a short note on: i) Torque equation of stepper motor.
  18. Unit 5OR Choice
    7 Marks
    iiWrite a short note on: ii) Applications of switched reluctance motors.
  19. Unit 5OR Choice
    7 Marks
    iiiWrite a short note on: iii) Permanent magnet materials used in PMBLDC motors.
  20. Unit 5OR Choice
    7 Marks
    ivWrite a short note on: iv) Magnetic reluctance.
Go to where you left off?

Quick Add to Notes

Save questions, your own notes and screenshots into notes filed by unit. It takes a free account.

Create free account

Have an account? Log in