Test your basic knowledge |

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. Moving blades on a rotor






2. Desiccant or refrigerant 1. heatless regeneration 2. heated regeneration






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






4. Requires annual review of SOPs






5. Air flow is upward






6. 1. plate 2. channel






7. 43-49 degrees C






8. Help maintain definite thrust toward exhaust






9. Has the highest level of thermal efficiency - low capital costs - fast start up - quick to build - low maint cost






10. 1. written 2. spoken 3. visual






11. Radiator type






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






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






14. Refers only to specificly to the turbine section

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






16. Increase pressure affecting performance of condenser but do not incresase temperature






17. Compression ignititon engines






18. Throttle body






19. Waste heat only






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






21. 1. start- stop (sliding vane) 2. load- unload (rotary) 3. modulating inlet 4. mircoprocessor based control






22. Results in pressure drop and increased velocity






23. Counter act force and load on thrust bearings






24. Made of polyethylene - skimming from the surface






25. 1. low power consumption 2. frequent load changes 3. adjustable 4. suction valve change easily






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






27. Atmospheric or hyperbolic






28. Contains dissolved oxygen






29. Used for single acting compressors






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






31. Servomotors






32. Meters liquid from liquid line into evaporator at a rate equal at which vaporization of liquid is occuring






33. Large turbines with a generator on each shaft






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






35. Hydraulic cylinder or pisston on a governor






36. 5mm in diameter






37. Condensing turbines exhaust steam at...






38. Dry surface coolers - no contact convection hx - aka finned tube exchangers






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






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






41. Straight condensing






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






43. Increased efficiency due to decreased frictional losses






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






45. 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






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






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






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






49. 1. vent to atmosphere 20% 2. condensing 30% 3. exhaust steam used for work 80%






50. Results in a gain in velocity - the moving blades change direction producing force