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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. Desiccant or refrigerant 1. heatless regeneration 2. heated regeneration






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






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






4. 75 -000 to 100 -00 hours of operation






5. Chrome- iron alloy






6. Too small to settle out - add floc






7. Centrifugal pumps






8. Overall master plan - comprehensive program






9. 1. list of all equipment 2. PM checklist 3. fequency 4. repairs and costs 5. record keeping 6. cost management






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






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






12. Moderate compression ratio - giving improved volumetric efficiency - but not lower discharge air temperature






13. 1. Gives perfect speed regulation 2. regulates turbine to a constant speed at all loads






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






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






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






17. Air flow is horizontal






18. Results in pressure drop and increased velocity






19. 1. intake 2. compression 3. power 4. exhaust






20. Simple generator - light - no battery - hotter spark at higher speeds






21. Has steam directed through baffles making 4 passes






22. 1. increases net power 2. clean working fluid 3. cheap fuel can be used






23. 1. lubricate sliding surfaces 2. cool bearings






24. 1. brass 2. copper 3. cupronickel






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






26. 1. sliding vane 2. rotary lobe 3. rotary screw ( convex male lobes - pulse free)






27. Recuperative category - high pressure






28. Good thermal properties - boiling point of -33.3 - pure anhydrous ammonia is noncorrosive - cheap - not miscible in oil - toxic






29. A group of one or more bays - including one or more units arranged in a single or continuous structure






30. 1. use clean burning fuels 2. less fuel being used - saving energy reserves 3. electrical production onsite lowers construction demands for new sites and reduces transmission line power losses






31. 1. start and stop control (reciprocating compressors) 2. variable speed (dymanic and rotary compressors) 3. constant speed (positive displacement)






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






33. 1. compressor section 2. combustor 3. turbine section






34. Moving blades on a rotor






35. To remove and properly dispose of pollutants






36. Used to open and close the by- pass port in a stator - varies the volum compressed air being produced






37. Use antifriction bearings






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






39. 1. remove non - condensables 2. dalton's law of partial pressures 3. reciprocating or rotart pump 4. below baffles






40. 1. Nozzle - impulse turbine only 2. throttle - reaction turbine only 3. bypass or overload - used on both turbines






41. Seperately forged discs or wheels and shrunk onto shaft






42. Nickel steel - strong fully balanced rotor - expensive






43. 1. better than gantt chart 2. establishes feasible sequence 3. timetable 4. spare time plotted 5. critical activities 6. use of arrow diagrams 7. event (aka nodes) - a situation that occurs after a completed activity 8. schedule manpower efficiently






44. The difference between the no- load and full- load speed - expressed as a %






45. Means to come together and form one mass - removes oil and water from air






46. Working fluid is compress then preheated in regenerator






47. Controlled pressure from intermediate stages of turbine






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






49. Use of a rotary lobe air blower






50. More rounded than impulse blading