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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. Increased efficiency due to decreased frictional losses






2. 'booster' compressor






3. Type of hydrometer indicating % of salt in solution






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






5. 1. widely used 2. single stage 3. impulse turbine






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






7. Large turbines with a generator on each shaft






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






9. Quantity ofr compressed air and delivered air by the compressor






10. Cooling of air between stages - condense below atmospheric temperature removing moisture - not primary function






11. Removal of exhaust gases by blow air through






12. 1. compression ration across compressor 2. turbine inlet temperature






13. To remove and properly dispose of pollutants






14. 1. oil reservoir 2. filters 3. pumps 4. coolers 5. protective monitoring devices






15. Moving blades on a rotor






16. At high temperatures a material stretches






17. Steam expands and pressure drops as it passes through moving blades - unbalance pressure






18. Nickel steel - strong fully balanced rotor - expensive






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






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






21. Eliminates thrust - steam admitted midway along casing






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






23. Polymers (polyelectrolytes)






24. Does not contain dissolved oxygen






25. Pressure does not drop across the moving blades






26. Pressure drops across the moving blades






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






28. Ground water monitoring device






29. Straight condensing






30. Change in direction causing a turbine to move






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






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






33. Center- to- center distance between baffles






34. Set of stationary nozzles and 2 sets of rotating blades - pressure drop occurs in stationary blades






35. Recuperative category - high pressure






36. Entire collection of all component

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






38. Refers to the production of power during overload demands






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






40. Air flow is upward






41. Counter act force and load on thrust bearings






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






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






44. 5mm in diameter






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






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






47. A thrust block that enables the axial position of the rotor to be controlled






48. Centrifugal pumps






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






50. No dissolved oxygen but does contain nitrates







Sorry!:) No result found.

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