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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. Working fluid is compress then preheated in regenerator






2. To remove and properly dispose of pollutants






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






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






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






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






7. Controlled pressure from intermediate stages of turbine






8. The utilization of one form of input energy to generate two or more forms of output energy






9. Too small to settle out - add floc






10. Used on large turbines to supply lower part of the bearing with oil to prevent metal to metal contact






11. HFC group - zero ozone depletion - nonflammable and nonexplosive - boiling point of -26.2 - miscibility problem with minerial oil - use sythetics ester based






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






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






14. 1. Flyweights 2. coutner spring 3. function based on centrifugal force






15. 1. high power to weight ration 2. use of different liquids and gaseous fuels 3. start rapidly 4. simple and compact design 5. reliable 6. remote operation






16. No dissolved oxygen but does contain nitrates






17. 1. lubricate sliding surfaces 2. cool bearings






18. 1. compressor discharge 2. condenser 3. liquid receiver






19. Up to 60-90%






20. Air flow is upward






21. CFC group - safe nontoxic - but long atmospheric life span of 100 years - boiling point of -29.8






22. 5mm in diameter






23. 1. collection system 2. seperation pond 3. flare pit 4. stabilization lagoon 5. wastewater heater 6. 1st stage aeration tank - activated sludge 7. 2nd stage aeration tank 8. clarifiers 9. polishing pond






24. Forced or induced draft






25. Reduces steam pressure and velocity in two or more steps






26. 1. large volumes of air 2. simple and rugged 3. low maintenance






27. drum rotors on reaction turbines eliminates...






28. 1. thrust bearings 2. dummy pistions 3. thrust adjusting gear






29. 1. single acting 2. double acting 3. two stage 4. tandem (first stage double acting - 2nd single) 5. free piston






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






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






32. Admirally brass or Munte metal - 25-40mm thick






33. Use teflon or carbon to lubricate system






34. 'huff and puff' methods

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35. Independant of the governor - inductive sensor (magnetic speed pickups)






36. Made of cast iron and support by stay bolts to protect against a vacuum






37. Use antifriction bearings






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






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






40. 1. Condensing 2. non - condensing (backpressure)






41. Sagging and hogging - 20-40rpm






42. Straight condensing






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






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






45. 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






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






47. Driving rotating equipment






48. Change in direction causing a turbine to move






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






50. Calcium chloride and water - -51