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






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






3. Small clearances between discs on shaft to...






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






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






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






7. Ground water monitoring device






8. Center- to- center distance between baffles






9. 1. written 2. spoken 3. visual






10. Recuperative category - high pressure






11. Compression ignititon engines






12. Centrifugal pumps






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






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






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






16. Working fluid is compress then preheated in regenerator






17. Same principle as a turbine but acting in reverse






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






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






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






21. Moisture removed by centrifugal force






22. Has steam directed through baffles making 4 passes






23. Condensing turbines exhaust steam at...






24. 1. sliding vane 2. rotary lobe 3. rotary screw ( convex male lobes - pulse free)






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






26. Large turbines with a generator on each shaft






27. Forced or induced draft






28. 43-49 degrees C






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






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






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






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






33. Nickel steel - strong fully balanced rotor - expensive






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






35. 1. verticle cyclinder 2. cabin heater 3. central tube wall






36. Counter act force and load on thrust bearings






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






38. 1. lubricate sliding surfaces 2. cool bearings






39. 1. brass 2. copper 3. cupronickel






40. 1. intake 2. compression 3. power 4. exhaust






41. Straight condensing






42. Entire collection of all component

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43. Equal and opposite reation

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44. 1. evaporator coil






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






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






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






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






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






50. The volum swept out by the piston - same through all stages