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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. Direct contact type - uses converging nozzles and in moderate vacuum






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






3. Higher power and speeds






4. Has steam directed through baffles making 4 passes






5. 43-49 degrees C






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






7. Velocity increases as passes through nozzles






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






9. Used for single acting compressors






10. An 'overrunning' clutch






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






12. Overall master plan - comprehensive program






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






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






15. Simple generator - light - no battery - hotter spark at higher speeds






16. U- tubes - surface areas less than 18 cubic meters - has small heat transfer surface






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






18. Reversal of flow within a compressor - rush in from discharge side sending a shock wave inside compressor






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






20. 1. evaporator coil






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






22. Independant of the governor - inductive sensor (magnetic speed pickups)






23. Contains 0.5kg of moisture for every 28 cubic meter of air






24. Radiator type






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






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

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






28. Either fixed production or varying






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






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






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






32. Chrome- iron alloy






33. Use of a rotary lobe air blower






34. 1. Condensing 2. non - condensing (backpressure)






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






36. Used to satisfy process steam requirements






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






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






39. Equal and opposite reation

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






41. To remove and properly dispose of pollutants






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






43. 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






44. 1. brass 2. copper 3. cupronickel






45. Refers only to specificly to the turbine section

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46. HFC group - zero ozone depletion - nonflammable and nonexplosive - boiling point of -26.2 - miscibility problem with minerial oil - use sythetics ester based






47. Nickel steel - strong fully balanced rotor - expensive






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






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






50. Waste heat only