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






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






3. Compression ignititon engines






4. Forced or induced draft






5. 1. written 2. spoken 3. visual






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






7. 'booster' compressor






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






9. Removal of exhaust gases by blow air through






10. 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






11. 1. deman reservoir 2. avoid overloading compressor 3. dampens deew point and temperature spikes rom air dryer






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






13. Pressure drops across the moving blades






14. Produce and maintain a vacuum at the turbine exhaust allowing steam to expand to a lower pressure and do more work






15. 1. Carbon ring 2. labyrinth seal 3. water seal






16. Radiator type






17. Main purpose to protect the evnironment (air - water and soil) and create public awareness - involves training - monitoring and reporting






18. Help maintain definite thrust toward exhaust






19. Defined as one or more tube bundle - served by two or more fans complete with aux equipment






20. 75 -000 to 100 -00 hours of operation






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






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






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






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






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






26. Moisture removed by centrifugal force






27. 43-49 degrees C






28. Condensing turbines exhaust steam at...






29. Either fixed production or varying






30. 1. sliding vane 2. rotary lobe 3. rotary screw ( convex male lobes - pulse free)






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






32. Attempting to pick up a load - turbines in parallel






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






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






35. Air drawn from atmosphere - working fluid






36. 'huff and puff' methods

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






38. Type of hydrometer indicating % of salt in solution






39. 1. brass 2. copper 3. cupronickel






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






41. 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






42. Straight condensing






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






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






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






46. drum rotors on reaction turbines eliminates...






47. 1. walnuts 2. rice 3. carbo- blase 4. offline water wash - best method






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






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






50. Working fluid is compress then preheated in regenerator