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






2. 1. sliding vane 2. rotary lobe 3. rotary screw ( convex male lobes - pulse free)






3. Most widely used - least amount of steam






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






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






6. Change in momentum

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






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






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






10. 1. brass 2. copper 3. cupronickel






11. Wrist pins that connect pistons to rod - retained bu circlips






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






13. Use teflon or carbon to lubricate system






14. Help maintain definite thrust toward exhaust






15. Change in direction causing a turbine to move






16. 1. titling pad Kingsbury (journal bearing) 2. Michel thrust bearing






17. 75 -000 to 100 -00 hours of operation






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






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






20. 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






21. 1. Difference in pressure across moving blades 2. steam leaks around edges 3. minimal blade clearances 4. unbalanced thrust






22. Throttle body






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






24. Ground water monitoring device






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

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26. As prime movers in pulp and paper industry






27. A concentrated solution at its critical point






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






29. 1. Nozzle - impulse turbine only 2. throttle - reaction turbine only 3. bypass or overload - used on both turbines






30. 1. reduce total energy bill 2. compact - les maintenance 3. short start up time 4. wide range of configurations






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






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






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






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






35. Air drawn from atmosphere - working fluid






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






37. Has the highest level of thermal efficiency - low capital costs - fast start up - quick to build - low maint cost






38. Non - condensing turbine exhaust steam at...






39. 1. convergent 2. convergent- divergent






40. 43-49 degrees C






41. Unit produces electricity on an ongoing basis






42. 1. plate 2. channel






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






44. Needs to a high vacuum present in system before charging






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






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






47. 'huff and puff' methods

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48. Forced or induced draft






49. 1. use clean burning fuels 2. less fuel being used - saving energy reserves 3. electrical production onsite lowers construction demands for new sites and reduces transmission line power losses






50. Desiccant or refrigerant 1. heatless regeneration 2. heated regeneration







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