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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. 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






2. A concentrated solution at its critical point






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






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






5. Cool compressed air before point of use






6. Atmospheric or hyperbolic






7. A group of one or more bays - including one or more units arranged in a single or continuous structure






8. The utilization of one form of input energy to generate two or more forms of output energy






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






10. The condenser






11. Forced or induced draft






12. 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






13. Same principle as a turbine but acting in reverse






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






15. 1. compressor discharge 2. condenser 3. liquid receiver






16. Each shaft needs a thrust bearing






17. Admirally brass or Munte metal - 25-40mm thick






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






19. 1. brass 2. copper 3. cupronickel






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






21. No dissolved oxygen but does contain nitrates






22. 1. remove non - condensables 2. dalton's law of partial pressures 3. reciprocating or rotart pump 4. below baffles






23. 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






24. At high temperatures a material stretches






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






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






27. HCFC group - miscible in oil - boiling point of -40.8 but can be used down to -87






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






29. Cannot go below -18






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






31. 1. large volums of air at medium pressures - high speed 2. free air capacities range from 2.8 to 3700 cubic meters






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






33. To remove and properly dispose of pollutants






34. Refers only to specificly to the turbine section


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






36. Pressure drops across the moving blades






37. Change in momentum


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






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






40. Direct prosses applications - absorption refrigeration - heat recovery boiler






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






42. Ground water monitoring device






43. 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






44. 1. cooling water in direct contact 2. drains into a hotwell 3. barometric leg - condenser sits 10.34m above hotwell






45. Throttle body






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






47. 1. plate 2. channel






48. Nickel steel - strong fully balanced rotor - expensive






49. 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






50. Higher altitudes