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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. Pressure does not drop across the moving blades






2. Have advantage of high efficiencies - 10% greater than centrifugal compressors






3. Polymers (polyelectrolytes)






4. Does not contain dissolved oxygen






5. Primary fuel produces high thermal energy for processes - the waste heat is used to produce electrical energy

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6. Needs to a high vacuum present in system before charging






7. Moisture removed by centrifugal force






8. Straight condensing






9. Refers to the production of electricity form two sources utilizing one fuel source






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






11. 1. Pressure compounding 2. velocity compounding 3. pressure- velocity compounding






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






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






14. 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






15. Atmospheric or hyperbolic






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






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






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






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






20. 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






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






22. Non - condensing turbine exhaust steam at...






23. Help maintain definite thrust toward exhaust






24. 1. to increase steam production 2. control superheater temperatures 3. meet process demands






25. Air flow is upward






26. Quantity ofr compressed air and delivered air by the compressor






27. Has steam directed through baffles making 4 passes






28. 1. spray 2. fog 3. special evaporator pads






29. Large pressure drop - increase volume to match the increase in steam volume and pressure decreases






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






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






32. Use teflon or carbon to lubricate system






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






34. Is the ratio of the discharge pressure to the intake pressure absolute






35. 1. contact - 'jet' 2. surface






36. 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






37. King valve






38. 1. large volums of air at medium pressures - high speed 2. free air capacities range from 2.8 to 3700 cubic meters






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






40. To remove and properly dispose of pollutants






41. A thrust block that enables the axial position of the rotor to be controlled






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






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






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






45. Main purpose to protect the evnironment (air - water and soil) and create public awareness - involves training - monitoring and reporting






46. Good thermal properties - boiling point of -33.3 - pure anhydrous ammonia is noncorrosive - cheap - not miscible in oil - toxic






47. Cool compressed air before point of use






48. Integral part of the governing system - in the front end and engages at 10-12% above normal operating speed






49. Change in direction causing a turbine to move






50. Use of a rotary lobe air blower