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EX-503 (A) · Electrical Power Generation & Economy/Important Questions

Electrical Power Generation & Economy (EX-503 (A)) - Important Questions

  1. 7 Marks High Priority Asked: 2025, 2023, 2022, 2020

    What are the factors / considerations for selection of site / location for a hydroelectric power plant?

    Appeared 4x (2025, 2023, 2022, 2020)

  2. 7 Marks High Priority Asked: 2025, 2023, 2022

    Discuss the different sources of energy / electrical power generation available in nature and their relative merits, demerits and advantages.

    Appeared 3x (2025, 2023, 2022)

  3. 7 Marks High Priority Asked: 2025, 2024

    With a neat sketch/diagram, explain the layout of a hydroelectric power plant and the functions of its components.

    Appeared 2x (2025, 2024)

  4. 7 Marks High Priority Asked: 2025, 2023

    Explain the flow duration curve and power duration curve of a hydroelectric plant.

    Appeared 2x (2025, 2023)

  5. 7 Marks Medium Priority Asked: 2025, 2020

    Mention the different sources of electrical power generation and discuss their relative merits and demerits.

    Appeared 2x (2025, 2020)

  6. 7 Marks Medium Priority Asked: 2025, 2020

    State the classification of hydro-turbines based on available water head and describe the working of one turbine.

    Appeared 2x (2025, 2020)

  7. 14 Marks Medium Priority Asked: 2024

    Write short notes on selected topics including flow duration curve, load curves, radiation shielding and magneto-hydro dynamic systems.

    Appeared 1x (2024)

  8. 7 Marks Medium Priority Asked: 2024

    What is a hydrograph and why is it used?

    Appeared 1x (2024)

  9. 7 Marks Medium Priority Asked: 2024

    Explain pumped storage power plant with its merits and demerits.

    Appeared 1x (2024)

  10. 7 Marks Low Priority Asked: 2023

    Write brief notes on Pelton and Kaplan turbines.

    Appeared 1x (2023)

  11. 7 Marks Low Priority Asked: 2022

    Discuss the advantages of hydroelectric power plant compared with thermal power plant.

    Appeared 1x (2022)

  12. 7 Marks High Priority Asked: 2025, 2023, 2022, 2020

    Draw a typical layout/diagram of a steam (thermal) power plant and explain its main features/operation.

    Appeared 5x (2025, 2023, 2022, 2020)

  13. 7 Marks Medium Priority Asked: 2025

    What are the factors for site selection of a thermal power station?

    Appeared 1x (2025)

  14. 7 Marks Medium Priority Asked: 2025

    Describe the feeding and burning, cooling tower, and ash handling components of a coal power plant.

    Appeared 1x (2025)

  15. 7 Marks Medium Priority Asked: 2025

    Explain a high-pressure boiler with neat sketch, construction, working principle, advantages and applications.

    Appeared 1x (2025)

  16. 7 Marks Medium Priority Asked: 2024

    Describe briefly the functions of steam turbines, economiser, feed water heater and cooling towers in a thermal power plant.

    Appeared 1x (2024)

  17. 7 Marks Medium Priority Asked: 2024

    What is the water treatment plant in a thermal power plant and why is it needed?

    Appeared 1x (2024)

  18. 7 Marks Low Priority Asked: 2023

    Explain the function of air-preheater and economizer in a thermal power plant.

    Appeared 1x (2023)

  19. 7 Marks Low Priority Asked: 2022, 2020

    Discuss briefly the functions of condenser, cooling towers, feed water heater and economiser in a steam station.

    Appeared 2x (2022, 2020)

  20. 7 Marks High Priority Asked: 2024, 2023, 2022, 2020

    Explain how wind energy is converted into electrical energy with diagram

    Appeared 4x (2024, 2023, 2022, 2020)

  21. 7 Marks High Priority Asked: 2025, 2023

    Explain the working principle of the Magneto-Hydro Dynamic (MHD) power generation system with a neat diagram, including its advantages, disadvantages and applications.

    Appeared 2x (2025, 2023)

  22. 7 Marks Medium Priority Asked: 2025, 2020

    Explain the principle and working of solar PV system / solar cell with diagram

    Appeared 2x (2025, 2020)

  23. 7 Marks Medium Priority Asked: 2025, 2020

    Explain how energy/electricity is generated from biomass conversion and its advantages.

    Appeared 2x (2025, 2020)

  24. 7 Marks Medium Priority Asked: 2025

    Define non-conventional power generation and explain its advantages and limitations.

    Appeared 1x (2025)

  25. 7 Marks Medium Priority Asked: 2025

    Write short notes on direct energy conversion solar system and wind system

    Appeared 1x (2025)

  26. 7 Marks Medium Priority Asked: 2024

    What are different components of thermo-electric conversion system?

    Appeared 1x (2024)

  27. 7 Marks Medium Priority Asked: 2024

    Explain the advantages of non-conventional power plants over conventional power plants.

    Appeared 1x (2024)

  28. 7 Marks Low Priority Asked: 2023

    Draw and explain the I-V characteristics of a solar cell

    Appeared 1x (2023)

  29. 7 Marks Low Priority Asked: 2022

    Explain the potential for geothermal energy in India.

    Appeared 1x (2022)

  30. 7 Marks High Priority Asked: 2025, 2020

    Explain the procedure for disposal of nuclear waste in a nuclear power plant.

    Appeared 3x (2025, 2020)

  31. 7 Marks High Priority Asked: 2025, 2023, 2020

    Explain the working and layout of a (simple) gas turbine power plant with a neat sketch / block diagram naming the components.

    Appeared 3x (2025, 2023, 2020)

  32. 10 Marks High Priority Asked: 2025, 2022

    Differentiate between nuclear fission and nuclear fusion and state the function of a moderator in a nuclear reactor.

    Appeared 2x (2025, 2022)

  33. 7 Marks Medium Priority Asked: 2024

    Describe the classification / types of gas turbine power plants with layout of any one.

    Appeared 1x (2024)

  34. 7 Marks Medium Priority Asked: 2024

    Explain CANDU reactor with neat sketch, its advantages and disadvantages.

    Appeared 1x (2024)

  35. 7 Marks Medium Priority Asked: 2024

    Describe the importance of nuclear waste management.

    Appeared 1x (2024)

  36. 7 Marks Low Priority Asked: 2023

    Discuss the availability of nuclear fuel for power generation in India.

    Appeared 1x (2023)

  37. 7 Marks Low Priority Asked: 2023

    Explain the components of a nuclear reactor with a neat diagram.

    Appeared 1x (2023)

  38. 7 Marks Low Priority Asked: 2023

    Discuss different methods to improve the thermal efficiency of a gas turbine plant.

    Appeared 1x (2023)

  39. 7 Marks Low Priority Asked: 2022, 2020

    Draw and describe the main components of a nuclear power plant with a neat line diagram.

    Appeared 2x (2022, 2020)

  40. 7 Marks Low Priority Asked: 2022, 2020

    Discuss radioactive pollution of the environment by nuclear power plant.

    Appeared 2x (2022, 2020)

  41. 7 Marks High Priority Asked: 2025

    Numerical on lossless economic load dispatch of two units for a given demand to find optimal $P_1, P_2$, incremental cost, generation cost and savings over equal sharing.

    Appeared 2x (2025)

  42. 7 Marks High Priority Asked: 2025, 2024, 2020

    Define tariff and discuss/compare the various types of tariffs used for charging consumers of electrical energy in practice.

    Appeared 3x (2025, 2024, 2020)

  43. 7 Marks High Priority Asked: 2025, 2024

    Discuss the economics / cost of electrical power generation and the various types of costs involved.

    Appeared 2x (2025, 2024)

  44. 14 Marks High Priority Asked: 2025, 2022, 2020

    Write short notes on any two topics such as peak load pricing, magneto-hydro dynamic system, waste disposal in nuclear power plant, load curve/forecasting, cogeneration, fuel cells, and small scale hydro-electric plant

    Appeared 3x (2025, 2022, 2020)

  45. 10 Marks High Priority Asked: 2025, 2022

    Given maximum demand, capacity factor and utilization factor, find load factor, plant capacity, reserve capacity and annual energy production.

    Appeared 2x (2025, 2022)

  46. 7 Marks Medium Priority Asked: 2025, 2020

    Differentiate between fixed and operating (running) costs of power plants and list their constituent items.

    Appeared 2x (2025, 2020)

  47. 7 Marks Medium Priority Asked: 2025

    What is economic load scheduling / economic scheduling principle and how does it optimize power plant performance?

    Appeared 1x (2025)

  48. 7 Marks Medium Priority Asked: 2025

    Numerical on economic dispatch with transmission losses to find penalty factor from incremental costs and loss coefficients.

    Appeared 1x (2025)

  49. 7 Marks Medium Priority Asked: 2025

    Explain why load factor and demand factor are always less than one.

    Appeared 1x (2025)

  50. 7 Marks Medium Priority Asked: 2025

    Briefly describe economic scheduling principle, load forecasting and electric tariffs.

    Appeared 1x (2025)

  51. 7 Marks Medium Priority Asked: 2024

    Given load factor, capacity factor, use factor and maximum demand, determine annual energy production and reserve capacity / hours not in service.

    Appeared 1x (2024)

  52. 14 Marks Low Priority Asked: 2023

    Write short notes on any two:

    Appeared 1x (2023)

  53. 7 Marks Low Priority Asked: 2022

    Describe the fuel system and exhaust system of a diesel power station.

    Appeared 1x (2022)

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