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






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






3. Ground water monitoring device






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






5. Meters liquid from liquid line into evaporator at a rate equal at which vaporization of liquid is occuring






6. Discharge steam when excessive backpressure exists






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






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






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






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






11. Refers only to specificly to the turbine section

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12. 5mm in diameter






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






14. DLN - reduce NOx down to 9ppm but have an increased combustion area






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






16. The crankshaft and valve train






17. 1. convergent 2. convergent- divergent






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






19. Air drawn from atmosphere - working fluid






20. 0.577 times the inlet pressure






21. Large turbines with a generator on each shaft






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






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






24. Same principle as a turbine but acting in reverse






25. Removal of exhaust gases by blow air through






26. drum rotors on reaction turbines eliminates...






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






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






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






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






31. Seperately forged discs or wheels and shrunk onto shaft






32. '3 ports' 1. intake and exhaust 2. compression and ignititon






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






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






35. 1. written 2. spoken 3. visual






36. Straight condensing






37. Overall master plan - comprehensive program






38. Small clearances between discs on shaft to...






39. Recuperative category - high pressure






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






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






42. Change in momentum

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43. 1. need cooling water 2. low hx efficiencies 3. complex in size - increase in costs






44. Contains dissolved oxygen






45. Pressure drops across the moving blades






46. Centrifugal pumps






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






48. A verticle well is used to increase the NPSH - gives better performance and less cavitation






49. Refers to the production of power during overload demands






50. Has steam directed through baffles making 4 passes