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






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






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






4. More rounded than impulse blading






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






6. 1. Split 2. double






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






8. Use of a rotary lobe air blower






9. 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






10. 1. Aero- derivate 2. Heavy duty






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






12. Ground water monitoring device






13. Fall under provincal boiler pressure regualtions - wcb and local fire marshall regulation and insurance company - need log book - safety device testing records






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






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






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






17. Good thermal properties - boiling point of -33.3 - pure anhydrous ammonia is noncorrosive - cheap - not miscible in oil - toxic






18. 1. bare tube 2. finned tube 3. plate surface - a vacuum exists between plates






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






20. Moving blades on a rotor






21. 1. inlet to the convection section 2. betwen convection and radiant section 3. at radiant section outlet






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






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






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






25. Requires annual review of SOPs






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






27. 1. spray 2. fog 3. special evaporator pads






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






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






30. Driving rotating equipment






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






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






33. Velocity increases as passes through nozzles






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






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






36. Used to satisfy process steam requirements






37. Countries with small grids or specail grid requirements - has a high efficiency at base loads






38. Refers to the production of power during overload demands






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






40. Seperately forged discs or wheels and shrunk onto shaft






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






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






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






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






45. King valve






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






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






48. Has steam directed through baffles making 4 passes






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






50. No dissolved oxygen but does contain nitrates