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. 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






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






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






4. The crankshaft and valve train






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






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






7. 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






8. Produce and maintain a vacuum at the turbine exhaust allowing steam to expand to a lower pressure and do more work






9. Cannot go below -18






10. Use antifriction bearings






11. '3 ports' 1. intake and exhaust 2. compression and ignititon






12. The space wherein the liquid refrigerant absorbs heat and boils






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






14. Has steam directed through baffles making 4 passes






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






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






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






18. Change in momentum

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19. Working fluid is compress then preheated in regenerator






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






21. Use teflon or carbon to lubricate system






22. 1. lowers power consumption 2. load changes frequently 3. pilot valve controls loading - adjustable






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






24. 'booster' compressor






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






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






27. Increased efficiency due to decreased frictional losses






28. Recuperative category - high pressure






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






30. An 'overrunning' clutch






31. Overall master plan - comprehensive program






32. Eliminates thrust - steam admitted midway along casing






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






34. 0.577 times the inlet pressure






35. Chrome- iron alloy






36. Seperately forged discs or wheels and shrunk onto shaft






37. Same principle as a turbine but acting in reverse






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






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






40. Forced or induced draft






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






42. Counter act force and load on thrust bearings






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






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






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






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






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






48. Large turbines couple together on a single shaft applied to one generator






49. Type of hydrometer indicating % of salt in solution






50. Higher altitudes