Test your basic knowledge |

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. stabilize flow through air driers 2. additional moisture seperation 3. storage capacity






2. Radiator type






3. Fall under provincal boiler pressure regualtions - wcb and local fire marshall regulation and insurance company - need log book - safety device testing records






4. Used to satisfy process steam requirements






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






6. 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






7. Chrome- iron alloy






8. Change in direction causing a turbine to move






9. Throttle body






10. 1. inlet to the convection section 2. betwen convection and radiant section 3. at radiant section outlet






11. Waste heat only






12. 1. planning 2. implementation 3. review






13. As prime movers in pulp and paper industry






14. 1. throttle inlet valve 2. reduce compressor speed 3. automatic discharge vent line 4. anit- surge valve - reciruclation 5. anti- surge microprocessor - kickback valve






15. 1. air compressed to 1100-3000kPa 2. combustion at 2000C 3. mixed with air - cooled to 918C on exit 4. combustor gases go to turbine 5. gases from turbine leave at atmospheric pressure and 500-640C






16. Moving blades on a rotor






17. Contains dissolved oxygen






18. Pressure drops across the moving blades






19. Very high speed with extremely high centrigufal force and high frictional losses






20. 1. internal 2. external 3. equipment vendors 4. chemical suppliers 5. office equipement vendors






21. Has the highest level of thermal efficiency - low capital costs - fast start up - quick to build - low maint cost






22. Use teflon or carbon to lubricate system






23. Cooling of air between stages - condense below atmospheric temperature removing moisture - not primary function






24. 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






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






26. No dissolved oxygen but does contain nitrates






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






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






29. Counter act force and load on thrust bearings






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






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






32. Controlled pressure from intermediate stages of turbine






33. A1 - A2 - A3 - B1 - B2 and B3 A = toxicity not identified under 400ppm B = toxicity identified under 400ppm 1 = not flammable 2 = low flammable limit 3 = highly flammable






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






35. 1. Aero- derivate 2. Heavy duty






36. Condensing turbines exhaust steam at...






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






38. Made of polyethylene - skimming from the surface






39. Air flow is horizontal






40. Does not contain dissolved oxygen






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






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






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






44. Cannot go below -18






45. Each shaft needs a thrust bearing






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






47. 1. plate 2. channel






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






49. Small pressure drop






50. Working fluid is compress then preheated in regenerator