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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. Each stage seperated by partitions - nozzles set into diaphragms






2. Large turbines couple together on a single shaft applied to one generator






3. Centrifugal pumps






4. Unit produces electricity on an ongoing basis






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






6. Refers to the production of power during overload demands






7. King valve






8. 1. thrust bearings 2. dummy pistions 3. thrust adjusting gear






9. Up to 60-90%






10. Small pressure drop






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






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






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






14. 1. stabilize flow through air driers 2. additional moisture seperation 3. storage capacity






15. 75 -000 to 100 -00 hours of operation






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






17. Has steam directed through baffles making 4 passes






18. Controlled pressure from intermediate stages of turbine






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






20. 1. evaporator coil






21. Center- to- center distance between baffles






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






23. Contains 0.5kg of moisture for every 28 cubic meter of air






24. Sagging and hogging - 20-40rpm






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






26. Chrome- iron alloy






27. Large turbines with a generator on each shaft






28. 1. Aero- derivate 2. Heavy duty






29. Air drawn from atmosphere - working fluid






30. 1. start and stop control (reciprocating compressors) 2. variable speed (dymanic and rotary compressors) 3. constant speed (positive displacement)






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






32. Air flow is horizontal






33. Used for single acting compressors






34. Each shaft needs a thrust bearing






35. 1. lowers power consumption 2. load changes frequently 3. pilot valve controls loading - adjustable






36. Made of polyethylene - skimming from the surface






37. Pressure does not drop across the moving blades






38. zeolite molecular sieve desiccant






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






40. The change in sped that resutls from an increase in load






41. 1. internal 2. external 3. equipment vendors 4. chemical suppliers 5. office equipement vendors






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






43. Reversal of flow within a compressor - rush in from discharge side sending a shock wave inside compressor






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






45. Dry surface coolers - no contact convection hx - aka finned tube exchangers






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






47. 1. convergent 2. convergent- divergent






48. Use teflon or carbon to lubricate system






49. 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






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