Test your basic knowledge |

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. Overall master plan - comprehensive program






2. Same principle as a turbine but acting in reverse






3. No dissolved oxygen but does contain nitrates






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






5. Has steam directed through baffles making 4 passes






6. 1. Split 2. double






7. Pressure does not drop across the moving blades






8. Equal and opposite reation

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






10. Removal of exhaust gases by blow air through






11. Controlled pressure from intermediate stages of turbine






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






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






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






15. Grit chambers and screens for waster water system






16. Polymers (polyelectrolytes)






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






18. Air flow is horizontal






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






20. Results in pressure drop and increased velocity






21. 0.577 times the inlet pressure






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






23. Waste heat only






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






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






26. Center- to- center distance between baffles






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






28. Air flow is upward






29. Moving blades on a rotor






30. Compression ignititon engines






31. 5mm in diameter






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






33. Contains dissolved oxygen






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






35. Countries with small grids or specail grid requirements - has a high efficiency at base loads






36. 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






37. Discharge steam when excessive backpressure exists






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






39. 1. written 2. spoken 3. visual






40. To remove and properly dispose of pollutants






41. 'huff and puff' methods

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






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






44. Use antifriction bearings






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






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






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






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






49. Made of polyethylene - skimming from the surface






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

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