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






2. Either fixed production or varying






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






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






5. Velocity increases as passes through nozzles






6. Air flow is upward






7. 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






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






9. At high temperatures a material stretches






10. 1. high manufacturing costs 2. slow speed changes 3. low efficiencies at low throttle






11. 1. evaporator coil






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






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






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






15. Most widely used - least amount of steam






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






17. Change in momentum

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18. The space wherein the liquid refrigerant absorbs heat and boils






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






20. HCFC group - miscible in oil - boiling point of -40.8 but can be used down to -87






21. 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






22. Large turbines with a generator on each shaft






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






24. Refers to the production of electricity form two sources utilizing one fuel source






25. 1. Aero- derivate 2. Heavy duty






26. 1. start and stop control (reciprocating compressors) 2. variable speed (dymanic and rotary compressors) 3. constant speed (positive displacement)






27. Use teflon or carbon to lubricate system






28. Eliminates thrust - steam admitted midway along casing






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






30. Higher altitudes






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






32. Has the highest level of thermal efficiency - low capital costs - fast start up - quick to build - low maint cost






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






34. 75 -000 to 100 -00 hours of operation






35. The crankshaft and valve train






36. 1. better than gantt chart 2. establishes feasible sequence 3. timetable 4. spare time plotted 5. critical activities 6. use of arrow diagrams 7. event (aka nodes) - a situation that occurs after a completed activity 8. schedule manpower efficiently






37. 1. commercial establishments 2. industrail processes 3. localized central heating of small plants






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






39. U- tubes - surface areas less than 18 cubic meters - has small heat transfer surface






40. Use of a rotary lobe air blower






41. '3 ports' 1. intake and exhaust 2. compression and ignititon






42. Equal and opposite reation

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43. Atmospheric or hyperbolic






44. Moving blades on a rotor






45. 1. lowers power consumption 2. load changes frequently 3. pilot valve controls loading - adjustable






46. Calcium chloride and water - -51






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






48. Fuel supplied firstg produces electrcial power with thermal energy as a by- product

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






50. Small pressure drop