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. Calcium chloride and water - -51






2. Eliminates thrust - steam admitted midway along casing






3. 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






4. Dry surface coolers - no contact convection hx - aka finned tube exchangers






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






6. Air flow is horizontal






7. 1. lubricate sliding surfaces 2. cool bearings






8. 1. high pressure cutout 2. oil pressure cutout 3. pressure relief devices






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






10. 1. CCME 2. CEQG 3. CWQG 4. US EPA






11. Moving blades on a rotor






12. At high temperatures a material stretches






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






14. Working fluid is compress then preheated in regenerator






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






16. To remove and properly dispose of pollutants






17. Discharge steam when excessive backpressure exists






18. 1. inlet vane 2. electro- pneumatic control 3. microprocessor based control






19. A concentrated solution at its critical point






20. Use antifriction bearings






21. Hydraulic cylinder or pisston on a governor






22. Nickel steel - strong fully balanced rotor - expensive






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






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






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






26. 1. throttle inlet valve 2. reduce compressor speed 3. automatic discharge vent line 4. anit- surge valve - reciruclation 5. anti- surge microprocessor - kickback valve






27. Throttle body






28. 75 -000 to 100 -00 hours of operation






29. 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






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






31. Polymers (polyelectrolytes)






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






33. 1. planning 2. implementation 3. review






34. Higher altitudes






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






36. 'booster' compressor






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






38. '3 ports' 1. intake and exhaust 2. compression and ignititon






39. Simple generator - light - no battery - hotter spark at higher speeds






40. 1. walnuts 2. rice 3. carbo- blase 4. offline water wash - best method






41. 1. spray 2. fog 3. special evaporator pads






42. Chrome- iron alloy






43. Use teflon or carbon to lubricate system






44. Radiator type






45. Either fixed production or varying






46. The utilization of one form of input energy to generate two or more forms of output energy






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






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






49. Sagging and hogging - 20-40rpm






50. Large turbines with a generator on each shaft