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






2. 'booster' compressor






3. Nickel steel - strong fully balanced rotor - expensive






4. 5mm in diameter






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






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






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






8. Each shaft needs a thrust bearing






9. Countries with small grids or specail grid requirements - has a high efficiency at base loads






10. Eliminates thrust - steam admitted midway along casing






11. A1 - A2 - A3 - B1 - B2 and B3 A = toxicity not identified under 400ppm B = toxicity identified under 400ppm 1 = not flammable 2 = low flammable limit 3 = highly flammable






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






13. Most widely used - least amount of steam






14. Condensing turbines exhaust steam at...






15. Working fluid is compress then preheated in regenerator






16. Direct contact type - uses converging nozzles and in moderate vacuum






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






18. Unit produces electricity on an ongoing basis






19. Non - condensing turbine exhaust steam at...






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






21. 1. electricial purity 2. silver nitrate - milky white






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






23. The condenser






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






25. 1. oil reservoir 2. filters 3. pumps 4. coolers 5. protective monitoring devices






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






27. drum rotors on reaction turbines eliminates...






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






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






30. Large turbines with a generator on each shaft






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






32. 1. high pressure cutout 2. oil pressure cutout 3. pressure relief devices






33. Pressure drops across the moving blades






34. Large pressure drop - increase volume to match the increase in steam volume and pressure decreases






35. Waste heat only






36. The volum swept out by the piston - same through all stages






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






38. Contains dissolved oxygen






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






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






41. 'huff and puff' methods


42. The crankshaft and valve train






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






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






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






46. Straight condensing






47. Either fixed production or varying






48. 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






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






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