Test your basic knowledge |

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. Attempting to pick up a load - turbines in parallel






2. 1. throttle inlet valve 2. reduce compressor speed 3. automatic discharge vent line 4. anit- surge valve - reciruclation 5. anti- surge microprocessor - kickback valve






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






4. An 'overrunning' clutch






5. 1. activated sludge and primary sludge combined 2. heated to 37C 3. sits for 25 days 4. anaerobic bacteria breaks down organic contents 5. produces useable gases for waste heat






6. Velocity increases as passes through nozzles






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






8. 1. Carbon ring 2. labyrinth seal 3. water seal






9. Refers only to specificly to the turbine section

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






11. 1. Aero- derivate 2. Heavy duty






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






13. zeolite molecular sieve desiccant






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






15. 1. planning 2. implementation 3. review






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






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






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






19. Higher altitudes






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






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






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






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






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






25. Seperately forged discs or wheels and shrunk onto shaft






26. Calcium chloride and water - -51






27. '3 ports' 1. intake and exhaust 2. compression and ignititon






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






29. Help maintain definite thrust toward exhaust






30. Counter act force and load on thrust bearings






31. The crankshaft and valve train






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






33. Moving blades on a rotor






34. Fall under provincal boiler pressure regualtions - wcb and local fire marshall regulation and insurance company - need log book - safety device testing records






35. Use of a rotary lobe air blower






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






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






38. To remove and properly dispose of pollutants






39. Small pressure drop






40. Does not contain dissolved oxygen






41. 1. prevent wear 2. reduce friction 3. remove heat 4. reduce corrosion 5. provide sealing






42. At high temperatures a material stretches






43. Set of stationary nozzles and 2 sets of rotating blades - pressure drop occurs in stationary blades






44. Working fluid is compress then preheated in regenerator






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






46. Simple generator - light - no battery - hotter spark at higher speeds






47. 1. increases net power 2. clean working fluid 3. cheap fuel can be used






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






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






50. 1. air compressed to 1100-3000kPa 2. combustion at 2000C 3. mixed with air - cooled to 918C on exit 4. combustor gases go to turbine 5. gases from turbine leave at atmospheric pressure and 500-640C