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






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






3. 'booster' compressor






4. Each shaft needs a thrust bearing






5. Has steam directed through baffles making 4 passes






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






7. Too small to settle out - add floc






8. 1. backpressure 2. condensate levels 3. contanimation 4. vacuum pay- off relays (10 to 40kPa) 5. vacuum trip relays (50kPa)






9. 1. Carbon ring 2. labyrinth seal 3. water seal






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






11. Change in momentum

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12. Attempting to pick up a load - turbines in parallel






13. Straight condensing






14. Same principle as a turbine but acting in reverse






15. 1. lubricate sliding surfaces 2. cool bearings






16. Removal of exhaust gases by blow air through






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






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






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






20. Increased efficiency due to decreased frictional losses






21. Refers to the production of power during overload demands






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






23. Cannot go below -18






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






25. 1. Single flow 2. double flow 3. automatic extraction 4. backpressure






26. Chrome- iron alloy






27. 1. air compressed to 1100-3000kPa 2. combustion at 2000C 3. mixed with air - cooled to 918C on exit 4. combustor gases go to turbine 5. gases from turbine leave at atmospheric pressure and 500-640C






28. Discharge steam when excessive backpressure exists






29. Ground water monitoring device






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






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






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






33. No dissolved oxygen but does contain nitrates






34. 1. throttle inlet valve 2. reduce compressor speed 3. automatic discharge vent line 4. anit- surge valve - reciruclation 5. anti- surge microprocessor - kickback valve






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






36. 1. single acting 2. double acting 3. two stage 4. tandem (first stage double acting - 2nd single) 5. free piston






37. Type of hydrometer indicating % of salt in solution






38. The space wherein the liquid refrigerant absorbs heat and boils






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






40. Unit produces electricity on an ongoing basis






41. Equal and opposite reation

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42. 1. Flyweights 2. coutner spring 3. function based on centrifugal force






43. Polymers (polyelectrolytes)






44. Use of a rotary lobe air blower






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






46. 1. commercial establishments 2. industrail processes 3. localized central heating of small plants






47. Higher power and speeds






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






49. Driving rotating equipment






50. Servomotors






Can you answer 50 questions in 15 minutes?



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