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InsemMar 20242019 patternBE Electrical

Advanced Electric Drives & Control (AEDC) SPPU Insem Question Paper Mar 2024

All 4 questions from this SPPU insem paper, as printed. Read them here or open the PDF.

Open the PDFMost repeated AEDC questions
Subject code
403149
Pattern
2019 pattern
Exam
Insem
Session
Mar 2024
Max. marks
30
Time
1 Hour
Semester
VIII
Paper code
[6270]-61

Printed for: B.E. (Electrical Engineering) (Insem)

Instructions to the candidates

  1. Answers Q1 or Q2, Q3 or Q4.
  2. Neat diagrams must be drawn wherever necessary.
  3. Figures to the right indicate full marks.
  4. Assume Suitable data if necessary.
  5. Use of non-programmable calculators is allowed.

Questions

  1. Q1

    1. a)

      What is electrical Drive? Explain essential parts of Electrical Drive with the help of block diagram.

      Also asked:Mar 2025 ·Feb 2023

      [7]
    2. b)

      A weight of 500kg is being lifted up at a uniform speed of l.5m/s by a winch driven by a motor running at a constant speed of 1000rpm. The moment of inertia of motor and winch are 0.5 kg-m 2 and 0.3 kg-m 2 respectively. Calculate motor torque and equivalent moment of inertia referred to motor shaft. In the absence of weight, motor develops a torque of 100 Nm when running at 1000 rpm.

      [8]

  2. Q2

    1. a)

      Explain steady state stability and derive the criteria of steady state stability of an electrical drive system.

      Also asked:Feb 2023

      [7]
    2. b)

      Explain Multi quadrant operation and speed torque conventions of a motor driving a hoist load.

      Also asked:Feb 2023

      [8]

  3. Q3

    1. a)

      Explain three-phase fully controlled converter drives fed separately excited DC Motor with suitable waveform and derive relation between speed and firing angle.

      Also asked:Feb 2023

      [7]
    2. b)

      A 220V, 1500rpm, 10A, separately excited DC motor is fed from a single phase fully controlled rectifier with an AC source of 230V, 50Hz. Ra=2  . Conduction can be assumed to be continuous. Calculate i) Firing angle for rated motor torque and speed of-l000rpm. ii) Firing angle for rated motor torque and speed of 1200rpm. iii) Motor speed for  = 160° at rated torque.

      [8]

  4. Q4

    1. a)

      Explain operation of two quadrant chopper controlled separately excited DC motor drive with suitable waveform.

      Also asked:Mar 2025 ·Feb 2023

      [7]
    2. b)

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

      [8]