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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. Center- to- center distance between baffles






2. Sagging and hogging - 20-40rpm






3. Good thermal properties - boiling point of -33.3 - pure anhydrous ammonia is noncorrosive - cheap - not miscible in oil - toxic






4. Very high speed with extremely high centrigufal force and high frictional losses






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






6. 1. contact - 'jet' 2. surface






7. Refers to the production of power during overload demands






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






9. Polymers (polyelectrolytes)






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






11. Counter act force and load on thrust bearings






12. Grit chambers and screens for waster water system






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






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






15. Velocity increases as passes through nozzles






16. 75 -000 to 100 -00 hours of operation






17. Made of polyethylene - skimming from the surface






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






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






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






21. Use teflon or carbon to lubricate system






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






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






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






25. Large turbines with a generator on each shaft






26. 1. cooling water in direct contact 2. drains into a hotwell 3. barometric leg - condenser sits 10.34m above hotwell






27. 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






28. Increased efficiency due to decreased frictional losses






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






30. 1. remove non - condensables 2. dalton's law of partial pressures 3. reciprocating or rotart pump 4. below baffles






31. 1. bare tube 2. finned tube 3. plate surface - a vacuum exists between plates






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






33. 1. spray 2. fog 3. special evaporator pads






34. 1. brass 2. copper 3. cupronickel






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






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






37. 5mm in diameter






38. Use of a rotary lobe air blower






39. Pressure drops across the moving blades






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






41. 1. written 2. spoken 3. visual






42. 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






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






44. As prime movers in pulp and paper industry






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






46. 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






47. Air flow is horizontal






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






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






50. Controlled pressure from intermediate stages of turbine