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Steam and Gas Turbines Practice Test: Combustion and Regeneration
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Combustion and Regeneration topics include: Combustion and its mechanics, thermochemistry, entropy, equilibrium, combustor, regenerator, its types, calculations and effectiveness, atomization, pressure losses and film coefficient. The regeneration cycle of a gas turbine uses heat from exhaust gases to preheat compressed air before combustion. This process can increase the turbine's thermal efficiency by 35–40%.  Steam turbines: Use the expansion of high-pressure steam to create rotational motion. Gas turbines: Use the combustion of fuel and air to drive a high-velocity flow of hot gases... Show more
Steam and Gas Turbines Practice Test: Combustion and Regeneration
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25 Questions

1. When combustor pressure decreases efficiency _________
2. Regenerators have lower surface area than recuperator.
3. In two stat regenerator system ________ stage is known as partial combustion mode.
4. Units of entropy are same as of units of energy.
5. When reactor steam outlet pressure is increased performance is increased __________
6. Entropy is an ___________
7. Nitrogen oxides are released from ________
8. In jet propulsion cycles _______ is used as working fluid.
9. In rotary regenerators rotation is _________ to the flow direction.
10. Thermodynamic entropy differs from statistical mechanics entropy by a constant __________
11. Both hot and cold fluid used in regenerators is __________
12. In rotary regenerators matrix is __________
13. Rotatary regenerators are _________ flow path.
14. In a fixed flow regenerator flow is __________
15. In jet propulsion cycle specific impulse is ___________
16. Rothemuhle regenerator has same design of _________ regenerator.
17. Fuel that was not completely burnt is called as _______
18. UHC’s are produced at _________ power levels.
19. Combustors which doesn’t produce more CO doesn’t emit much UHC.
20. Film coefficient is represented by _______
21. When specific heat increases flame temperature ________
22. In two stage regenerator system catalyst cooler is added.
23. Entropy is a _______ function.
24. Regenerators used in cryogenics are ________
25. ___________ are present in gas turbine fuel injectors.