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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. Higher power and speeds






2. The condenser






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






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






5. Contains dissolved oxygen






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






7. 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






8. 1. inlet vane 2. electro- pneumatic control 3. microprocessor based control






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






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






11. 1. verticle cyclinder 2. cabin heater 3. central tube wall






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






13. 1. Aero- derivate 2. Heavy duty






14. Cannot go below -18






15. 1. widely used 2. single stage 3. impulse turbine






16. Removal of exhaust gases by blow air through






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






18. One or more tube bundles - in one or more bays for an individual service or process






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






20. Driving rotating equipment






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






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






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






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






25. '3 ports' 1. intake and exhaust 2. compression and ignititon






26. Small pressure drop






27. Steam expands and pressure drops as it passes through moving blades - unbalance pressure






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






29. Each shaft needs a thrust bearing






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






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






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






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






34. Air flow is upward






35. Wrist pins that connect pistons to rod - retained bu circlips






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






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






38. Grit chambers and screens for waster water system






39. Use of a rotary lobe air blower






40. An 'overrunning' clutch






41. Most widely used - least amount of steam






42. 'huff and puff' methods

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






44. Up to 60-90%






45. 75 -000 to 100 -00 hours of operation






46. 1. ferrules 2. metallic and fiber packing 3. roll expanding 4. combination - inlet end expanded and belled - outlet pakced or ferruled






47. Pieces left on tips of turbine blading so the shrouding canbe attached to correspond with strips






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






49. 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






50. Change in direction causing a turbine to move