Question 1 of 5
Consider the following statements with respect to thermal power stations. State whether these statements are true or false: (a) They pollute the atmosphere due to the production of a large amount of smoke and fumes. (b) They are costlier in running cost as compared to hydroelectric plants. (c) They require a larger space as compared to hydroelectric power stations for the same capacity of generation.
Why: Thermal power plants burn fossil fuels (primarily coal) which produces significant atmospheric pollution including smoke, particulate matter, and greenhouse gases. The operational costs are higher due to continuous fuel procurement and handling. However, thermal plants occupy considerably less land area than hydroelectric plants which require large water bodies and extensive civil infrastructure. A thermal plant can be constructed near fuel and water supply sources with minimal land requirement, whereas hydroelectric plants need large reservoir areas.
Question 2 of 5
Describe the layout of a coal-based thermal power plant and explain the function of each major component.
Why: A comprehensive coal-based thermal power plant layout includes coal handling, boiler, turbine, generator, condenser, cooling tower, feedwater treatment, ash handling, and pollution control systems. Each component plays a critical role in the energy conversion process from chemical energy in coal to electrical energy delivered to the grid.
Question 3 of 5
What factors should be considered while selecting a site for a thermal power plant?
Why: Thermal power plant site selection requires evaluation of fuel proximity, water availability, geological stability, environmental impact, transportation infrastructure, labor availability, grid connectivity, climate conditions, land availability, and regulatory compliance. These factors collectively determine the feasibility and long-term success of the power plant.
Question 4 of 5
Define and explain the terms: base load, average load, and peak load for a power plant.
Why: These three load terms define different aspects of power demand patterns. Base load is constant minimum demand, average load is the mean demand over time, and peak load is the maximum demand during specific periods. Understanding these helps in optimal power plant scheduling and capacity planning.
Question 5 of 5
List and briefly explain the types of boilers used in thermal power plants.
Why: Boilers are classified as fire-tube or water-tube types based on whether hot gases or water flows through the tubes. Modern thermal power plants predominantly use water-tube boilers like La Mont and Benson types that can operate at high pressures and temperatures for improved efficiency.
