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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. Use of a rotary lobe air blower






2. HFC group - zero ozone depletion - nonflammable and nonexplosive - boiling point of -26.2 - miscibility problem with minerial oil - use sythetics ester based






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






4. As prime movers in pulp and paper industry






5. A group of one or more bays - including one or more units arranged in a single or continuous structure






6. Servomotors






7. Pressure does not drop across the moving blades






8. Used to satisfy process steam requirements






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






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






11. Entire collection of all component

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12. Centrifugal pumps






13. CFC group - safe nontoxic - but long atmospheric life span of 100 years - boiling point of -29.8






14. 1. high power to weight ration 2. use of different liquids and gaseous fuels 3. start rapidly 4. simple and compact design 5. reliable 6. remote operation






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






16. Type of hydrometer indicating % of salt in solution






17. Refers to the production of power during overload demands






18. Same principle as a turbine but acting in reverse






19. zeolite molecular sieve desiccant






20. Unit produces electricity on an ongoing basis






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






22. 1. deman reservoir 2. avoid overloading compressor 3. dampens deew point and temperature spikes rom air dryer






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






24. Air flow is horizontal






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






26. Fuel supplied firstg produces electrcial power with thermal energy as a by- product

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






28. 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






29. 1. Responsive to speed changes 2. responsive to pressurre changes






30. Used for single acting compressors






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






32. 1. plate 2. channel






33. Refers to the production of electricity form two sources utilizing one fuel source






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






35. 1. prevent wear 2. reduce friction 3. remove heat 4. reduce corrosion 5. provide sealing






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






37. Has steam directed through baffles making 4 passes






38. Throttle body






39. 5mm in diameter






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






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






42. Small pressure drop






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

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






45. Means to come together and form one mass - removes oil and water from air






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






47. Monel metal - high tensile strength - nickel copper alloy






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






49. Radiator type






50. Produce and maintain a vacuum at the turbine exhaust allowing steam to expand to a lower pressure and do more work







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