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EndsemMay 20232019 patternBE Electrical

Advanced Electric Drives & Control (AEDC) SPPU Endsem Question Paper May 2023

All 8 questions from this SPPU endsem paper, as printed. Read them here or open the PDF.

Open the PDFMost repeated AEDC questions
Subject code
403149
Pattern
2019 pattern
Exam
Endsem
Session
May 2023
Max. marks
70
Time
2½ Hours
Semester
VIII
Paper code
[6004]-514

Printed for: B.E. (Electrical)

Instructions to the candidates

  1. Answer Q.1 or Q.2, Q.3 or Q.4, Q.5 or Q.6, Q.7or Q.8
  2. Neat diagrams must be drawn wherever necessary.
  3. Figures to the right indicate full marks.
  4. Use of calculator is allowed.
  5. Assume suitable data if necessary.

Questions

  1. Q1

    1. a)

      With necessary mathematical expressions explain ac dynamic braking of three phase induction motor using two lead connection. Also draw necessary torque speed characteristics.

      [9]
    2. b)

      A 400V wye connected 3 phase, 6 pole, 50 Hz induction motor has following parameters referred to the stator Rs = Rr’ = 1 Ohm, Xs = Xr’ = 2 Ohm is under go plugging operation from its full load speed of 950 rpm. The stator to rotor turns ratio is 2.3. Calculate the initial braking current and torque as a ratio of their full load values. What resistance must be inserted in rotor circuit to reduce the maximum braking to 1.5 times full load current?

      [9]

  2. Q2

    1. a)

      Discuss VSI fed induction Motor Drive. Also give different circuit topologies of VSI fed Drives.

      [9]
    2. b)

      This part has equations that don’t show as text. Open the PDF to read it.

      [9]

  3. Q3

    1. a)

      Describe the construction and operation of BLDC Motor.

      [8]
    2. b)

      With neat diagram explain close loop control of BLDC motor. Also describe characteristics of BLDC Motor.

      Also asked:May 2024

      [9]

  4. Q4

    1. a)

      Describe with necessary diagram sensored vector control of BLDC motor. What advantages of vector control?

      Also asked:Nov 2024 ·May 2024 ·Nov 2023

      [9]
    2. b)

      Explain control scheme of BLDC motor used in EV applications.

      [8]

  5. Q5

    1. a)

      Explain different topologies of rotor constructions used in PMSM. Also state the applications of each.

      Also asked:May 2025 ·Nov 2024 ·Nov 2023

      [9]
    2. b)

      Explain direct vector control of PMSM motor with necessary diagrams.

      [8]

  6. Q6

    1. a)

      Describe the construction of synchronous reluctance motor. Also judge the suitability of this motor for EV applications.

      Also asked:Nov 2025 ·May 2025 ·Nov 2024

      [9]
    2. b)

      Compare BLDC motor with PMSM motor.

      Also asked:May 2024

      [8]

  7. Q7

    1. a)

      How motors are classified on the basis of duty and enclosure type. How these will help selecting motors?

      Also asked:May 2025

      [9]
    2. b)

      Explain various requirements and choice of drive for EV applications. Also explain basic operations of drive. 3

      Also asked:May 2025 ·May 2024

      [9]

  8. Q8

    1. a)

      Explain requirements of motor drive requirements for traction applications. Explain with neat sketch any one scheme.

      Also asked:May 2025 ·May 2024

      [9]
    2. b)

      With schematic diagram explain drives required in sugar industries. Will modern power converters be useful in sugar industry? Explain. 

      Also asked:Nov 2023

      [9]