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Power Plant Engineering Practice Test: Fuels & Combustion
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Avg score: 83% Most missed: “Coke devoid of volatile matter is called __________”
Fuels & Combustion topics include: Fuel oil, coal-oil and coal-water, biomass, draught system and heat of combustion. Thermal power generation is a method of creating electricity by burning fuels like coal, oil, and natural gas. This process is called thermal generation.  Here's how it works: The burning of fuels heats water in boilers to create steam. The steam rotates a turbine that drives a generator to produce electricity.  Thermal power plants use a variety of fuels, including: Liquefied natural gas (LNG) Liquefied petroleum gas (LPG) Heavy oil Crude oil Natural gas liquid... Show more
Power Plant Engineering Practice Test: Fuels & Combustion
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25 Questions

1. Stack heat losses can be minimised by __________
2. Natural draught produced by a chimney depends upon __________
3. Fuel gases containing hydrocarbons are not preheated before burning, because __________
4. Calorific value of coal middling generated in coal washeries during washing of coal may be around __________ Kcal/kg.
5. High amount of sulphur and phosphorous in coke causes __________
6. ‘Fat coal’ means a coal having __________
7. Higher efficiency in combustion of solid fuel cannot be achieved by ___________
8. The heat transferred when the H2O in the products is in the liquid state is called?
9. The extent of caking in coal is determined using __________
10. Which of these gases is the reason for the maintenance of natural gas at cryogenic temperatures?
11. Which of these is not a type of mechanical draft system for a furnace?
12. Which of these is not a reason for reduction in maximum flame temperature in actuality?
13. Which of these accentuates clinkering trouble on furnace grate burning coal?
14. Internal energy of combustion products is ______________ than that of reactants.
15. In pure oxygen, the maximum flame temperature is _____________
16. Presence of ______________ in dry gaseous fuel does not contribute its calorific value.
17. For endothermic reactions, Gibbs free energy change has to be?
18. Which of these terms defines the pressure difference in the furnace?
19. Tar yield in the low temperature and high temperature carbonisation of dry coal may be respectively __________ percent.
20. Which of the following types of the fans has the highest cost?
21. Which of these properties specifies the minimum temperature at which fuel oil can be ignited?
22. HCV stands for?
23. What are the first products in Fischer-Tropsch process?
24. Which of these is a product of pyrolysis process in dry thermochemical conversion?
25. The design of steam generator greatly depends on __________