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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. compressor discharge 2. condenser 3. liquid receiver






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






3. Small pressure drop






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






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






6. 1. use clean burning fuels 2. less fuel being used - saving energy reserves 3. electrical production onsite lowers construction demands for new sites and reduces transmission line power losses






7. 1. simple design 2. less piping 3. no freezing hazard






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






9. Unit produces electricity on an ongoing basis






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






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






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






13. The space wherein the liquid refrigerant absorbs heat and boils






14. Compression ignititon engines






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






16. Change in direction causing a turbine to move






17. 1. kettle 2. thermosyphon horizontal 3. thermosyphon vertical






18. '3 ports' 1. intake and exhaust 2. compression and ignititon






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






20. Removal of exhaust gases by blow air through






21. 1. start and stop control (reciprocating compressors) 2. variable speed (dymanic and rotary compressors) 3. constant speed (positive displacement)






22. Condensing turbines exhaust steam at...






23. Pressure does not drop across the moving blades






24. Results in pressure drop and increased velocity






25. 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






26. A thrust block that enables the axial position of the rotor to be controlled






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






28. 1. written 2. spoken 3. visual






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






30. drum rotors on reaction turbines eliminates...






31. The condenser






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






33. Seperately forged discs or wheels and shrunk onto shaft






34. 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






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






36. On the exhaust side - drives the blower - being connected to the same shaft - increases power by 50-70% as more air is forced into the engine






37. Cool compressed air before point of use






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






39. 1. activated sludge and primary sludge combined 2. heated to 37C 3. sits for 25 days 4. anaerobic bacteria breaks down organic contents 5. produces useable gases for waste heat






40. Cast with special nickel based alloys - Inconel - Udimet - Waspalloy - Hastelloy






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






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






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






44. Requires annual review of SOPs






45. Equal and opposite reation

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46. Cannot go below -18






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






48. Pieces left on tips of turbine blading so the shrouding canbe attached to correspond with strips






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






50. The difference between the no- load and full- load speed - expressed as a %







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