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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. Calcium chloride and water - -51






2. Center- to- center distance between baffles






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






4. Entire collection of all component

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






6. zeolite molecular sieve desiccant






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






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






9. As prime movers in pulp and paper industry






10. Throttle body






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






12. Type of hydrometer indicating % of salt in solution






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






14. 1. start and stop control (reciprocating compressors) 2. variable speed (dymanic and rotary compressors) 3. constant speed (positive displacement)






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






16. Change in momentum

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17. Counter act force and load on thrust bearings






18. Equal and opposite reation

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






20. Moving blades on a rotor






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






22. Too small to settle out - add floc






23. Moisture removed by centrifugal force






24. Chrome- iron alloy






25. 1. control range of 0 to 100% load 2. energy efficient






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






27. Each shaft needs a thrust bearing






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






29. Eliminates thrust - steam admitted midway along casing






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






31. Driving rotating equipment






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






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






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






35. Higher power and speeds






36. Dry surface coolers - no contact convection hx - aka finned tube exchangers






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






38. Cannot go below -18






39. Small pressure drop






40. Servomotors






41. 1. Split 2. double






42. 75 -000 to 100 -00 hours of operation






43. 1. single acting 2. double acting 3. two stage 4. tandem (first stage double acting - 2nd single) 5. free piston






44. Ground water monitoring device






45. 0.577 times the inlet pressure






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






47. Reduction of NOx through ammonia injection priot to catalyst - lowering NOx to 10ppm






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






49. Very high speed with extremely high centrigufal force and high frictional losses






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






Can you answer 50 questions in 15 minutes?



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