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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. Change in direction causing a turbine to move






2. The change in sped that resutls from an increase in load






3. Fall under provincal boiler pressure regualtions - wcb and local fire marshall regulation and insurance company - need log book - safety device testing records






4. 1. large volumes of air 2. simple and rugged 3. low maintenance






5. 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






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






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






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






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






10. Each shaft needs a thrust bearing






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






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






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






14. Most widely used - least amount of steam






15. 1. compression ration across compressor 2. turbine inlet temperature






16. An 'overrunning' clutch






17. Used for single acting compressors






18. 1. lubricate sliding surfaces 2. cool bearings






19. 1. compressor section 2. combustor 3. turbine section






20. 0.577 times the inlet pressure






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






22. Moving blades on a rotor






23. 1. planning 2. implementation 3. review






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






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






26. Type of hydrometer indicating % of salt in solution






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






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






29. Radiator type






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






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






32. 1. Difference in pressure across moving blades 2. steam leaks around edges 3. minimal blade clearances 4. unbalanced thrust






33. Straight condensing






34. Unit produces electricity on an ongoing basis






35. Recuperative category - high pressure






36. Working fluid is compress then preheated in regenerator






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






38. Higher altitudes






39. 1. ferrules 2. metallic and fiber packing 3. roll expanding 4. combination - inlet end expanded and belled - outlet pakced or ferruled






40. 'huff and puff' methods

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






42. Primary fuel produces high thermal energy for processes - the waste heat is used to produce electrical energy

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






44. Results in pressure drop and increased velocity






45. Sagging and hogging - 20-40rpm






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






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






48. Air drawn from atmosphere - working fluid






49. Either fixed production or varying






50. Nickel steel - strong fully balanced rotor - expensive