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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. Air flow is upward






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






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






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






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






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






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






8. zeolite molecular sieve desiccant






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






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






11. 'booster' compressor






12. Control a steady backpressure - sensing element in exhuast line






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






14. 1. Responsive to speed changes 2. responsive to pressurre changes






15. Reduction of NOx through ammonia injection priot to catalyst - lowering NOx to 10ppm






16. Removal of exhaust gases by blow air through






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






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






19. Same principle as a turbine but acting in reverse






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






21. As prime movers in pulp and paper industry






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






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






24. Center- to- center distance between baffles






25. Unit produces electricity on an ongoing basis






26. At high temperatures a material stretches






27. Small pressure drop






28. Pressure drops across the moving blades






29. 1. vent to atmosphere 20% 2. condensing 30% 3. exhaust steam used for work 80%






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






31. 1. inlet to the convection section 2. betwen convection and radiant section 3. at radiant section outlet






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






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






34. Counter act force and load on thrust bearings






35. Either fixed production or varying






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






37. 1. titling pad Kingsbury (journal bearing) 2. Michel thrust bearing






38. 75 -000 to 100 -00 hours of operation






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






40. Type of hydrometer indicating % of salt in solution






41. Hydraulic cylinder or pisston on a governor






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






43. 1. evaporator coil






44. Radiator type






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






46. Throttle body






47. Help maintain definite thrust toward exhaust






48. Meters liquid from liquid line into evaporator at a rate equal at which vaporization of liquid is occuring






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






50. Use antifriction bearings







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