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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. 1. verticle cyclinder 2. cabin heater 3. central tube wall






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






3. 1. high manufacturing costs 2. slow speed changes 3. low efficiencies at low throttle






4. Straight condensing






5. Controlled pressure from intermediate stages of turbine






6. 43-49 degrees C






7. 1. deman reservoir 2. avoid overloading compressor 3. dampens deew point and temperature spikes rom air dryer






8. Air drawn from atmosphere - working fluid






9. Centrifugal pumps






10. Atmospheric or hyperbolic






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






12. 1. ferrules 2. metallic and fiber packing 3. roll expanding 4. combination - inlet end expanded and belled - outlet pakced or ferruled






13. Change in direction causing a turbine to move






14. More rounded than impulse blading






15. 1. activated sludge 2. rotating biological contactors 3. trickling filters






16. Monel metal - high tensile strength - nickel copper alloy






17. 1. titling pad Kingsbury (journal bearing) 2. Michel thrust bearing






18. 1. brass 2. copper 3. cupronickel






19. Set of stationary nozzles and 2 sets of rotating blades - pressure drop occurs in stationary blades






20. Cause high discharge pressures - more power requirements - reduces capacity






21. Chrome- iron alloy






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






23. Most widely used - least amount of steam






24. Sagging and hogging - 20-40rpm






25. '3 ports' 1. intake and exhaust 2. compression and ignititon






26. 1. simple design 2. less piping 3. no freezing hazard






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






28. Nickel steel - strong fully balanced rotor - expensive






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






30. Is the ratio of the discharge pressure to the intake pressure absolute






31. A verticle well is used to increase the NPSH - gives better performance and less cavitation






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






33. Requires annual review of SOPs






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






35. 1. Responsive to speed changes 2. responsive to pressurre changes






36. 0.577 times the inlet pressure






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






38. 1. to increase steam production 2. control superheater temperatures 3. meet process demands






39. Pieces left on tips of turbine blading so the shrouding canbe attached to correspond with strips






40. The crankshaft and valve train






41. Refers only to specificly to the turbine section

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42. Polymers (polyelectrolytes)






43. Moving blades on a rotor






44. 1. individual pump system 2. distributor system 3. common rail system






45. 1. commercial establishments 2. industrail processes 3. localized central heating of small plants






46. Driving rotating equipment






47. Control a steady backpressure - sensing element in exhuast line






48. Contains dissolved oxygen






49. Results in pressure drop and increased velocity






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