Electrical Power Generation & Economy (EX-503 (A)) - Important Questions
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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)
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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)
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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)
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7 Marks High Priority Asked: 2025, 2023
Explain the flow duration curve and power duration curve of a hydroelectric plant.
Appeared 2x (2025, 2023)
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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)
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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)
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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)
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7 Marks Medium Priority Asked: 2024
What is a hydrograph and why is it used?
Appeared 1x (2024)
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7 Marks Medium Priority Asked: 2024
Explain pumped storage power plant with its merits and demerits.
Appeared 1x (2024)
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7 Marks Low Priority Asked: 2023
Write brief notes on Pelton and Kaplan turbines.
Appeared 1x (2023)
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7 Marks Low Priority Asked: 2022
Discuss the advantages of hydroelectric power plant compared with thermal power plant.
Appeared 1x (2022)
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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)
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7 Marks Medium Priority Asked: 2025
What are the factors for site selection of a thermal power station?
Appeared 1x (2025)
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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)
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7 Marks Medium Priority Asked: 2025
Explain a high-pressure boiler with neat sketch, construction, working principle, advantages and applications.
Appeared 1x (2025)
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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)
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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)
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7 Marks Low Priority Asked: 2023
Explain the function of air-preheater and economizer in a thermal power plant.
Appeared 1x (2023)
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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)
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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)
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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)
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7 Marks Medium Priority Asked: 2025, 2020
Explain the principle and working of solar PV system / solar cell with diagram
Appeared 2x (2025, 2020)
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7 Marks Medium Priority Asked: 2025, 2020
Explain how energy/electricity is generated from biomass conversion and its advantages.
Appeared 2x (2025, 2020)
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7 Marks Medium Priority Asked: 2025
Define non-conventional power generation and explain its advantages and limitations.
Appeared 1x (2025)
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7 Marks Medium Priority Asked: 2025
Write short notes on direct energy conversion solar system and wind system
Appeared 1x (2025)
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7 Marks Medium Priority Asked: 2024
What are different components of thermo-electric conversion system?
Appeared 1x (2024)
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7 Marks Medium Priority Asked: 2024
Explain the advantages of non-conventional power plants over conventional power plants.
Appeared 1x (2024)
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7 Marks Low Priority Asked: 2023
Draw and explain the I-V characteristics of a solar cell
Appeared 1x (2023)
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7 Marks Low Priority Asked: 2022
Explain the potential for geothermal energy in India.
Appeared 1x (2022)
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7 Marks High Priority Asked: 2025, 2020
Explain the procedure for disposal of nuclear waste in a nuclear power plant.
Appeared 3x (2025, 2020)
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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)
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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)
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7 Marks Medium Priority Asked: 2024
Describe the classification / types of gas turbine power plants with layout of any one.
Appeared 1x (2024)
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7 Marks Medium Priority Asked: 2024
Explain CANDU reactor with neat sketch, its advantages and disadvantages.
Appeared 1x (2024)
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7 Marks Medium Priority Asked: 2024
Describe the importance of nuclear waste management.
Appeared 1x (2024)
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7 Marks Low Priority Asked: 2023
Discuss the availability of nuclear fuel for power generation in India.
Appeared 1x (2023)
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7 Marks Low Priority Asked: 2023
Explain the components of a nuclear reactor with a neat diagram.
Appeared 1x (2023)
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7 Marks Low Priority Asked: 2023
Discuss different methods to improve the thermal efficiency of a gas turbine plant.
Appeared 1x (2023)
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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)
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7 Marks Low Priority Asked: 2022, 2020
Discuss radioactive pollution of the environment by nuclear power plant.
Appeared 2x (2022, 2020)
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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)
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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)
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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)
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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)
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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)
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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)
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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)
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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)
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7 Marks Medium Priority Asked: 2025
Explain why load factor and demand factor are always less than one.
Appeared 1x (2025)
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7 Marks Medium Priority Asked: 2025
Briefly describe economic scheduling principle, load forecasting and electric tariffs.
Appeared 1x (2025)
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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)
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14 Marks Low Priority Asked: 2023
Write short notes on any two:
Appeared 1x (2023)
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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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