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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. prevent wear 2. reduce friction 3. remove heat 4. reduce corrosion 5. provide sealing






2. As prime movers in pulp and paper industry






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






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






5. 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






6. 1. oil reservoir 2. filters 3. pumps 4. coolers 5. protective monitoring devices






7. Removal of exhaust gases by blow air through






8. Center- to- center distance between baffles






9. Counter act force and load on thrust bearings






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






11. Air flow is horizontal






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






13. Pressure drops across the moving blades






14. Discharge steam when excessive backpressure exists






15. 75 -000 to 100 -00 hours of operation






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






17. Radiator type






18. 1. Split 2. double






19. Polymers (polyelectrolytes)






20. Defined as one or more tube bundle - served by two or more fans complete with aux equipment






21. The condenser






22. Straight condensing






23. 1. Single flow 2. double flow 3. automatic extraction 4. backpressure






24. 1. start- stop (sliding vane) 2. load- unload (rotary) 3. modulating inlet 4. mircoprocessor based control






25. Fuel supplied firstg produces electrcial power with thermal energy as a by- product

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26. 1. brass 2. copper 3. cupronickel






27. Up to 60-90%






28. Increase pressure affecting performance of condenser but do not incresase temperature






29. 1. lubricate sliding surfaces 2. cool bearings






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






31. Servomotors






32. On the exhaust side - drives the blower - being connected to the same shaft - increases power by 50-70% as more air is forced into the engine






33. Has steam directed through baffles making 4 passes






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






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






36. Controlled pressure from intermediate stages of turbine






37. An 'overrunning' clutch






38. The change in sped that resutls from an increase in load






39. Reversal of flow within a compressor - rush in from discharge side sending a shock wave inside compressor






40. Used for single acting compressors






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






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






43. 1. evaporator coil






44. Air drawn from atmosphere - working fluid






45. Seperately forged discs or wheels and shrunk onto shaft






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






47. 1. planning 2. implementation 3. review






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






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






50. Moving blades on a rotor