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






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






3. Compression ignititon engines






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






5. Working fluid is compress then preheated in regenerator






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






7. CFC group - safe nontoxic - but long atmospheric life span of 100 years - boiling point of -29.8






8. Small pressure drop






9. Pressure drops across the moving blades






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






11. 1. deman reservoir 2. avoid overloading compressor 3. dampens deew point and temperature spikes rom air dryer






12. Entire collection of all component

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






14. '3 ports' 1. intake and exhaust 2. compression and ignititon






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






16. Straight condensing






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






18. 43-49 degrees C






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






20. 1. large volumes of air 2. simple and rugged 3. low maintenance






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






22. Calcium chloride and water - -51






23. Discharge steam when excessive backpressure exists






24. Nickel steel - strong fully balanced rotor - expensive






25. Chrome- iron alloy






26. Change in direction causing a turbine to move






27. Throttle body






28. Velocity increases as passes through nozzles






29. 1. Nozzle - impulse turbine only 2. throttle - reaction turbine only 3. bypass or overload - used on both turbines






30. A thrust block that enables the axial position of the rotor to be controlled






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






32. Ground water monitoring device






33. Overall master plan - comprehensive program






34. Higher power and speeds






35. Cool compressed air before point of use






36. 1. collection system 2. seperation pond 3. flare pit 4. stabilization lagoon 5. wastewater heater 6. 1st stage aeration tank - activated sludge 7. 2nd stage aeration tank 8. clarifiers 9. polishing pond






37. 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






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






39. Hydraulic cylinder or pisston on a governor






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






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






42. Eliminates thrust - steam admitted midway along casing






43. Too small to settle out - add floc






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






45. The condenser






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






47. 0.577 times the inlet pressure






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






49. A concentrated solution at its critical point






50. Most widely used - least amount of steam







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