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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. Reduces steam pressure and velocity in two or more steps






2. Discharge steam when excessive backpressure exists






3. Condensing turbines exhaust steam at...






4. Most widely used - least amount of steam






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






6. 1. bare tube 2. finned tube 3. plate surface - a vacuum exists between plates






7. Admirally brass or Munte metal - 25-40mm thick






8. 1. simple design 2. less piping 3. no freezing hazard






9. Hydraulic cylinder or pisston on a governor






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






11. 1. kettle 2. thermosyphon horizontal 3. thermosyphon vertical






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






13. On the exhaust side - drives the blower - being connected to the same shaft - increases power by 50-70% as more air is forced into the engine






14. Use teflon or carbon to lubricate system






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






16. Throttle body






17. The condenser






18. Seperately forged discs or wheels and shrunk onto shaft






19. Pressure does not drop across the moving blades






20. Air flow is upward






21. Unit produces electricity on an ongoing basis






22. 1. written 2. spoken 3. visual






23. Compression ignititon engines






24. 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






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






26. 1. brass 2. copper 3. cupronickel






27. Change in direction causing a turbine to move






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






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






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






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






32. The crankshaft and valve train






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






34. Grit chambers and screens for waster water system






35. Eliminates thrust - steam admitted midway along casing






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






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






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






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






40. 1. individual pump system 2. distributor system 3. common rail system






41. Equal and opposite reation

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42. 1. Condensing 2. non - condensing (backpressure)






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






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






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






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






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






48. 1. evaporator coil






49. Used for single acting compressors






50. 5mm in diameter