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InsemSep 20232019 patternBE Electrical

Advanced Control System (ACS) SPPU Insem Question Paper Sep 2023

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

Open the PDFMost repeated ACS questions
Subject code
403142
Pattern
2019 pattern
Exam
Insem
Session
Sep 2023
Max. marks
30
Time
1 Hour
Semester
VII
Paper code
[6188]-167

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

Instructions to the candidates

  1. Solve Q.1 or Q.2 ; Q.3 or Q.4.
  2. Figures to the right indicate full marks.
  3. Neat diagrams must be drawn wherever necessary.
  4. Assume suitable additional data, if necessary.
  5. Use of non-programmable calculator is allowed.

Questions

  1. Q1

    1. a)

      Draw the circuit diagram and hence derive the transfer function for a phase lag network, and state its importance.

      [7]
    2. b)

      The open loop Transfer function of a unity feedback control system is given by G(s) = K / S(1 + 0.2S). Design a suitable lead compensator such that the given system has static velocity error constant 10 and Phase margine 50°.

      [8]

  2. Q2

    1. a)

      Draw the circuit diagram and hence derive the transfer function for a phase lead network and also state its importance.

      [7]
    2. b)

      Design a lag compensator network for G(s) = K / S(S + 2), with velocity error constant > = 10 and Phase margin greater than 60°.

      [8]

  3. Q3

    1. a)

      Explain the following with respect to non-linear system. Support the answers with figures. i) Limit Cycle ii) Sub harmonic oscillations. 2

      [7]
    2. b)

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

      [8]

  4. Q4

    1. a)

      Derive the mathematical expression for the describing function of an ideal relay. Support the answer with a figure.

      [7]
    2. b)

      Explain any four common non linearities with their characteristics. 

      [8]