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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. An 'overrunning' clutch






2. Refers to the production of power during overload demands






3. Means to come together and form one mass - removes oil and water from air






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






5. 1. Gives perfect speed regulation 2. regulates turbine to a constant speed at all loads






6. Used on large turbines to supply lower part of the bearing with oil to prevent metal to metal contact






7. Contains dissolved oxygen






8. Grit chambers and screens for waster water system






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






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






11. 1. backpressure 2. condensate levels 3. contanimation 4. vacuum pay- off relays (10 to 40kPa) 5. vacuum trip relays (50kPa)






12. 0.577 times the inlet pressure






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






14. Made of cast iron and support by stay bolts to protect against a vacuum






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






16. 43-49 degrees C






17. A1 - A2 - A3 - B1 - B2 and B3 A = toxicity not identified under 400ppm B = toxicity identified under 400ppm 1 = not flammable 2 = low flammable limit 3 = highly flammable






18. Rows of stationart baldes with alternating rows of moving blades






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






20. 1. Aero- derivate 2. Heavy duty






21. Too small to settle out - add floc






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






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






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






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






26. 1. inlet vane 2. electro- pneumatic control 3. microprocessor based control






27. Results in a gain in velocity - the moving blades change direction producing force






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






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






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






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






32. Hydraulic cylinder or pisston on a governor






33. Calcium chloride and water - -51






34. Refers only to specificly to the turbine section

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35. drum rotors on reaction turbines eliminates...






36. Cooling of air between stages - condense below atmospheric temperature removing moisture - not primary function






37. The condenser






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






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






40. Large turbines with a generator on each shaft






41. Compression ignititon engines






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






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






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






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






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






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






48. Counter act force and load on thrust bearings






49. 1. evaporator coil






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