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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. Hydraulic cylinder or pisston on a governor






2. Does not contain dissolved oxygen






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






4. 1. lubricate sliding surfaces 2. cool bearings






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






6. Large turbines with a generator on each shaft






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






8. 1. reduce total energy bill 2. compact - les maintenance 3. short start up time 4. wide range of configurations






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






10. Working fluid is compress then preheated in regenerator






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






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






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


14. Velocity increases as passes through nozzles






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






16. 43-49 degrees C






17. Throttle body






18. Either fixed production or varying






19. Increase pressure affecting performance of condenser but do not incresase temperature






20. 1. brass 2. copper 3. cupronickel






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






22. 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






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






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






25. Counter act force and load on thrust bearings






26. 1. CCME 2. CEQG 3. CWQG 4. US EPA






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






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






29. 1. operates on a temperature difference between substances 2. warm to cold only 3. rate of transfer depends on temperature difference






30. The crankshaft and valve train






31. 1. Split 2. double






32. King valve






33. 1. need cooling water 2. low hx efficiencies 3. complex in size - increase in costs






34. Radiator type






35. 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






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






37. 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






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






39. Centrifugal pumps






40. Each stage seperated by partitions - nozzles set into diaphragms






41. Controlled pressure from intermediate stages of turbine






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






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






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






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






46. DLN - reduce NOx down to 9ppm but have an increased combustion area






47. Compression ignititon engines






48. Up to 60-90%






49. Refers only to specificly to the turbine section


50. One or more tube bundles - in one or more bays for an individual service or process