Conventional Power Generation MCQs December 24, 2025July 12, 2024 by u930973931_answers 25 min Score: 0 Attempted: 0/25 Subscribe 1. Which fuel is commonly used in conventional thermal power plants? (A) Solar (B) Coal (C) Wind (D) Hydrogen 2. What is the typical efficiency range of a coal-fired power plant? (A) 10–20% (B) 30–40% (C) 50–60% (D) 70–80% 3. Which of the following is not a component of a steam turbine? (A) Condenser (B) Boiler (C) Governor (D) Compressor 4. The primary function of a boiler in a thermal power plant is to: (A) Generate electricity directly (B) Cool the steam after it leaves the turbine (C) Control the flow of steam (D) Convert chemical energy into heat energy 5. Which of the following is a disadvantage of coal-fired power plants? (A) High efficiency (B) Low emissions (C) High water consumption (D) Low maintenance cost 6. The process of pulverization in a coal-fired power plant is done to: (A) Reduce the size of coal particles (B) Increase the efficiency of combustion (C) Control emissions (D) Generate electricity 7. Which component of a steam turbine controls its speed? (A) Condenser (B) Economizer (C) Boiler (D) Governor 8. The Rankine cycle is used in thermal power plants to: (A) Convert nuclear energy into electricity (B) Produce chemical reactions (C) Generate solar energy (D) Convert heat into mechanical work 9. What is the typical voltage level at which electricity is generated in a power plant? (A) 110V (B) 240V (C) 480V (D) 11kV 10. Which cooling method is commonly used in thermal power plants to condense steam? (A) Air cooling (B) Water cooling (C) Oil cooling (D) Fan cooling 11. The term “boiler efficiency” refers to: (A) The temperature of the steam produced (B) The ratio of energy output to energy input (C) The quality of coal used (D) The efficiency of the turbine 12. In a thermal power plant, what is the purpose of an economizer? (A) To preheat the boiler feedwater (B) To control the temperature of steam (C) To reduce emissions (D) To increase the efficiency of the generator 13. Which gas is released in significant quantities during the combustion of coal? (A) Oxygen (B) Nitrogen (C) Carbon dioxide (D) Hydrogen 14. Which type of turbine is most commonly used in thermal power plants? (A) Impulse turbine (B) Reaction turbine (C) Kaplan turbine (D) Pelton turbine 15. What is the purpose of a transformer in a power plant? (A) To increase the voltage of electricity for transmission (B) To convert mechanical energy into electrical energy (C) To regulate the flow of steam (D) To cool the condenser 16. What is the approximate overall efficiency of a combined cycle power plant? (A) 80–90% (B) 40–50% (C) 60–70% (D) 20–30% 17. Which of the following is a renewable energy source used in conventional power generation? (A) Wind (B) Geothermal (C) Solar (D) Biomass 18. What is the function of a deaerator in a thermal power plant? (A) To heat the feedwater before entering the boiler (B) To remove impurities from water (C) To regulate the flow of steam (D) To cool the condenser 19. Which environmental concern is associated with coal-fired power plants? (A) Reduced greenhouse gas emissions (B) Minimal water consumption (C) Acid rain (D) Low land use 20. What is the purpose of a bypass system in a thermal power plant? (A) To divert excess steam (B) To regulate the temperature of the boiler (C) To control emissions (D) To cool the condenser 21. Which component of a thermal power plant converts mechanical energy into electrical energy? (A) Turbine (B) Boiler (C) Condenser (D) Pump 22. Which of the following is an advantage of using natural gas in thermal power plants? (A) Abundant supply (B) Low efficiency (C) High emissions (D) High water consumption 23. The primary source of heat in a nuclear power plant is: (A) Coal (B) Oil (C) Solar energy (D) Uranium 24. What is the purpose of a superheater in a steam power plant? (A) To increase the temperature of steam (B) To heat the feedwater before entering the boiler (C) To remove impurities from water (D) To increase the efficiency of the turbine 25. Which pollutant is primarily controlled by flue gas desulfurization (FGD) systems? (A) Carbon monoxide (B) Sulfur dioxide (C) Nitrogen oxides (D) Particulate matter