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






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






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






4. Use antifriction bearings






5. Large turbines with a generator on each shaft






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






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






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






9. 1. compressor section 2. combustor 3. turbine section






10. Used for single acting compressors






11. Counter act force and load on thrust bearings






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






13. Straight condensing






14. Use of a rotary lobe air blower






15. 0.577 times the inlet pressure






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






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






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






19. Condensing turbines exhaust steam at...






20. Results in a gain in velocity - the moving blades change direction producing force






21. The utilization of one form of input energy to generate two or more forms of output energy






22. 1. Split 2. double






23. No dissolved oxygen but does contain nitrates






24. 'booster' compressor






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






26. 1. deman reservoir 2. avoid overloading compressor 3. dampens deew point and temperature spikes rom air dryer






27. Each shaft needs a thrust bearing






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






29. 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






30. U- tubes - surface areas less than 18 cubic meters - has small heat transfer surface






31. Higher altitudes






32. Pressure drops across the moving blades






33. Removal of exhaust gases by blow air through






34. 1. can - annular 2. annular 3. single- can






35. Air drawn from atmosphere - working fluid






36. Most widely used - least amount of steam






37. 1. CCME 2. CEQG 3. CWQG 4. US EPA






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






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






40. 1. evaporator coil






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






42. Contains 0.5kg of moisture for every 28 cubic meter of air






43. Radiator type






44. Made of polyethylene - skimming from the surface






45. 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






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






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






48. 1. compression ration across compressor 2. turbine inlet temperature






49. Direct prosses applications - absorption refrigeration - heat recovery boiler






50. Up to 60-90%