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. Fall under provincal boiler pressure regualtions - wcb and local fire marshall regulation and insurance company - need log book - safety device testing records






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






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






4. 1. contact - 'jet' 2. surface






5. Small pressure drop






6. Used to satisfy process steam requirements






7. 1. electricial purity 2. silver nitrate - milky white






8. drum rotors on reaction turbines eliminates...






9. Entire collection of all component

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10. Has steam directed through baffles making 4 passes






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






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






13. 1. vent to atmosphere 20% 2. condensing 30% 3. exhaust steam used for work 80%






14. Center- to- center distance between baffles






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






16. Velocity increases as passes through nozzles






17. Quantity ofr compressed air and delivered air by the compressor






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






19. Used for single acting compressors






20. Forced or induced draft






21. 1. Aero- derivate 2. Heavy duty






22. Driving rotating equipment






23. 'huff and puff' methods

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24. A verticle well is used to increase the NPSH - gives better performance and less cavitation






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






26. Servomotors






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






28. 43-49 degrees C






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






30. 0.577 times the inlet pressure






31. 1. Condensing 2. non - condensing (backpressure)






32. 1. high manufacturing costs 2. slow speed changes 3. low efficiencies at low throttle






33. Same principle as a turbine but acting in reverse






34. 1. activated sludge and primary sludge combined 2. heated to 37C 3. sits for 25 days 4. anaerobic bacteria breaks down organic contents 5. produces useable gases for waste heat






35. '3 ports' 1. intake and exhaust 2. compression and ignititon






36. Used on large turbines to supply lower part of the bearing with oil to prevent metal to metal contact






37. Cannot go below -18






38. Does not contain dissolved oxygen






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






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






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






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






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






44. Moisture removed by centrifugal force






45. At high temperatures a material stretches






46. Moving blades on a rotor






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






48. 1. ferrules 2. metallic and fiber packing 3. roll expanding 4. combination - inlet end expanded and belled - outlet pakced or ferruled






49. zeolite molecular sieve desiccant






50. Compression ignititon engines