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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. compressor section 2. combustor 3. turbine section






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






3. Recuperative category - high pressure






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






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






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






7. 5mm in diameter






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






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






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






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






12. Contains dissolved oxygen






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






14. Monel metal - high tensile strength - nickel copper alloy






15. '3 ports' 1. intake and exhaust 2. compression and ignititon






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






17. Pressure does not drop across the moving blades






18. A group of one or more bays - including one or more units arranged in a single or continuous structure






19. At high temperatures a material stretches






20. 1. evaporator coil






21. More rounded than impulse blading






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






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






24. Reversal of flow within a compressor - rush in from discharge side sending a shock wave inside compressor






25. 1. backpressure 2. condensate levels 3. contanimation 4. vacuum pay- off relays (10 to 40kPa) 5. vacuum trip relays (50kPa)






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






27. Eliminates thrust - steam admitted midway along casing






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






29. HFC group - zero ozone depletion - nonflammable and nonexplosive - boiling point of -26.2 - miscibility problem with minerial oil - use sythetics ester based






30. Use of a rotary lobe air blower






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






32. Each shaft needs a thrust bearing






33. Nickel steel - strong fully balanced rotor - expensive






34. drum rotors on reaction turbines eliminates...






35. 1. inlet to the convection section 2. betwen convection and radiant section 3. at radiant section outlet






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






37. Servomotors






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






39. Same principle as a turbine but acting in reverse






40. 'booster' compressor






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






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






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






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






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






46. 'huff and puff' methods

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47. Does not contain dissolved oxygen






48. Working fluid is compress then preheated in regenerator






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






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