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






2. Type of hydrometer indicating % of salt in solution






3. Controlled pressure from intermediate stages of turbine






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






5. Grit chambers and screens for waster water system






6. 1. better than gantt chart 2. establishes feasible sequence 3. timetable 4. spare time plotted 5. critical activities 6. use of arrow diagrams 7. event (aka nodes) - a situation that occurs after a completed activity 8. schedule manpower efficiently






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






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






9. 1. Gives perfect speed regulation 2. regulates turbine to a constant speed at all loads






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






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






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






13. The difference between the no- load and full- load speed - expressed as a %






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






15. Direct contact type - uses converging nozzles and in moderate vacuum






16. Air drawn from atmosphere - working fluid






17. Overall master plan - comprehensive program






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






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






20. Higher altitudes






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






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






23. Used to satisfy process steam requirements






24. 1. compressor discharge 2. condenser 3. liquid receiver






25. HCFC group - miscible in oil - boiling point of -40.8 but can be used down to -87






26. 43-49 degrees C






27. 1. planning 2. implementation 3. review






28. Center- to- center distance between baffles






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






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






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






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






33. Cannot go below -18






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






35. 1. verticle cyclinder 2. cabin heater 3. central tube wall






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






37. Pressure does not drop across the moving blades






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






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






40. Pressure drops across the moving blades






41. Change in direction causing a turbine to move






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






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






44. To remove and properly dispose of pollutants






45. King valve






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






47. 1. activated sludge 2. rotating biological contactors 3. trickling filters






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






49. Cooling of air between stages - condense below atmospheric temperature removing moisture - not primary function






50. 75 -000 to 100 -00 hours of operation