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






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






3. 1. charge drawn into cylinder is air only 2. fuel injected at high pressures 3. ignition due to high compression temperatuers






4. Type of hydrometer indicating % of salt in solution






5. Center- to- center distance between baffles






6. Means to come together and form one mass - removes oil and water from air






7. Has steam directed through baffles making 4 passes






8. 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






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. Pressure does not drop across the moving blades






11. Moderate compression ratio - giving improved volumetric efficiency - but not lower discharge air temperature






12. 5mm in diameter






13. 1. list of all equipment 2. PM checklist 3. fequency 4. repairs and costs 5. record keeping 6. cost management






14. Either fixed production or varying






15. A concentrated solution at its critical point






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






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

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






19. Discharge steam when excessive backpressure exists






20. 1. written 2. spoken 3. visual






21. Fuel supplied firstg produces electrcial power with thermal energy as a by- product

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






23. zeolite molecular sieve desiccant






24. Hydraulic cylinder or pisston on a governor






25. 1. Pressure compounding 2. velocity compounding 3. pressure- velocity compounding






26. Waste heat only






27. Change in momentum

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






29. Too small to settle out - add floc






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






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






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






33. Reduces steam pressure and velocity in two or more steps






34. More rounded than impulse blading






35. Nickel steel - strong fully balanced rotor - expensive






36. Refers only to specificly to the turbine section

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37. A1 - A2 - A3 - B1 - B2 and B3 A = toxicity not identified under 400ppm B = toxicity identified under 400ppm 1 = not flammable 2 = low flammable limit 3 = highly flammable






38. Cannot go below -18






39. Radiator type






40. Servomotors






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






42. 43-49 degrees C






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






44. Determines how much oxygen aerobic microorganisms that have been placed in the water to decompose organic matter






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






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






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






48. 1. need cooling water 2. low hx efficiencies 3. complex in size - increase in costs






49. 1. can - annular 2. annular 3. single- can






50. An 'overrunning' clutch