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EX-504 (B) · Electromagnetic Theory/Unsolved PYQ Paper

EX-504 (B) Electromagnetic Theory - Jun 2025 Question Paper

  1. 7 Marks
    aDiscuss the operation of single-phase half-wave rectifier with RE load. Also derive its average output voltage equations.
  2. 7 Marks
    bDiscuss the advantages and disadvantages of full-wave rectifiers in power supply applications.
  3. 7 Marks
    aDraw the VI characteristics of SCR and mark the holding current and latching current in the characteristic.
  4. 7 Marks
    bDiscuss the various turn-on and turn-off methods of SCR circuit.
  5. 7 Marks
    aWrite the applications of MOSFET, IGBT and SCR.
  6. 7 Marks
    bExplain the principles of operation and features of Insulated Gate Bipolar Transistors (IGBTs).
  7. 7 Marks
    aDiscuss the applications of Operational Amplifier (OP-AMPs) in electronic circuits.
  8. 7 Marks
    bDescribe how an OP-AMP can be used as a function generator.
  9. 14 Marks
    Explain the functions and applications of Programmable Logic Controllers (PLCs) in industrial automation.
  10. 7 Marks
    aDescribe the programming language and basic programming examples used in PLCs.
  11. 7 Marks
    bCompare PLCs with conventional relay controllers and discuss the advantages and disadvantages of using PLCs in process control applications.
  12. 14 Marks
    Explain the concept of ladder logic language used in PLC programming. Provide examples of ladder logic diagrams and explain how they represent control logic in PLC programs.
  13. 14 Marks
    Write short notes (Any Two): a) Switch Mode Power Supply b) Power MOSFET c) Wien Bridge Oscillator
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