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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. Direct prosses applications - absorption refrigeration - heat recovery boiler






2. Counter act force and load on thrust bearings






3. Cause high discharge pressures - more power requirements - reduces capacity






4. Compression ignititon engines






5. The condenser






6. Each shaft needs a thrust bearing






7. 75 -000 to 100 -00 hours of operation






8. Cool compressed air before point of use






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






10. Pressure does not drop across the moving blades






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






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






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






14. Large turbines with a generator on each shaft






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






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






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






18. A concentrated solution at its critical point






19. Increased efficiency due to decreased frictional losses






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






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






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






23. Air flow is horizontal






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






25. Cannot go below -18






26. 5mm in diameter






27. Overall master plan - comprehensive program






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






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






30. Condensing turbines exhaust steam at...






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






32. 1. contact - 'jet' 2. surface






33. KW at 15C standard at sealevel with 60% RH






34. 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






35. Eliminates thrust - steam admitted midway along casing






36. 'huff and puff' methods

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37. Made of steel - used for double acting pistons - acts as a piston rod






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






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






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






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






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






43. 1. simple design 2. less piping 3. no freezing hazard






44. Air flow is upward






45. Controlled pressure from intermediate stages of turbine






46. Use antifriction bearings






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






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






49. 1. planning 2. implementation 3. review






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






Can you answer 50 questions in 15 minutes?



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