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Power Engineering 2

Subject : engineering
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Straight condensing






2. Sagging and hogging - 20-40rpm






3. 1. CCME 2. CEQG 3. CWQG 4. US EPA






4. Unit produces electricity on an ongoing basis






5. 1. low power consumption 2. frequent load changes 3. adjustable 4. suction valve change easily






6. Eliminates thrust - steam admitted midway along casing






7. 1. Single flow 2. double flow 3. automatic extraction 4. backpressure






8. 1. Pressure compounding 2. velocity compounding 3. pressure- velocity compounding






9. 1. compression ration across compressor 2. turbine inlet temperature






10. DLN - reduce NOx down to 9ppm but have an increased combustion area






11. Throttle body






12. 1. bare tube 2. finned tube 3. plate surface - a vacuum exists between plates






13. Have advantage of high efficiencies - 10% greater than centrifugal compressors






14. Quantity ofr compressed air and delivered air by the compressor






15. 1. Difference in pressure across moving blades 2. steam leaks around edges 3. minimal blade clearances 4. unbalanced thrust






16. Results in pressure drop and increased velocity






17. Direct prosses applications - absorption refrigeration - heat recovery boiler






18. 1. brass 2. copper 3. cupronickel






19. Up to 60-90%






20. Cannot go below -18






21. 1. control range of 0 to 100% load 2. energy efficient






22. Recuperative category - high pressure






23. Use antifriction bearings






24. 1. Carbon ring 2. labyrinth seal 3. water seal






25. Small clearances between discs on shaft to...






26. Determines how much oxygen aerobic microorganisms that have been placed in the water to decompose organic matter






27. Non - condensing turbine exhaust steam at...






28. 1. high pressure cutout 2. oil pressure cutout 3. pressure relief devices






29. Compression ignititon engines






30. To remove and properly dispose of pollutants






31. Discharge steam when excessive backpressure exists






32. Type of hydrometer indicating % of salt in solution






33. 1. reduce total energy bill 2. compact - les maintenance 3. short start up time 4. wide range of configurations






34. Made of steel - used for double acting pistons - acts as a piston rod






35. 1. charge drawn into cylinder is air only 2. fuel injected at high pressures 3. ignition due to high compression temperatuers






36. Made of polyethylene - skimming from the surface






37. Cast with special nickel based alloys - Inconel - Udimet - Waspalloy - Hastelloy






38. HCFC group - miscible in oil - boiling point of -40.8 but can be used down to -87






39. Integral part of the governing system - in the front end and engages at 10-12% above normal operating speed






40. 1. need cooling water 2. low hx efficiencies 3. complex in size - increase in costs






41. Meters liquid from liquid line into evaporator at a rate equal at which vaporization of liquid is occuring






42. KW at 15C standard at sealevel with 60% RH






43. 1. operates on a temperature difference between substances 2. warm to cold only 3. rate of transfer depends on temperature difference






44. Counter act force and load on thrust bearings






45. 1. evaporator coil






46. The volum swept out by the piston - same through all stages






47. Removal of exhaust gases by blow air through






48. Condensing turbines exhaust steam at...






49. 1. vent to atmosphere 20% 2. condensing 30% 3. exhaust steam used for work 80%






50. Reversal of flow within a compressor - rush in from discharge side sending a shock wave inside compressor