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. King valve






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






3. 'huff and puff' methods

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4. To remove and properly dispose of pollutants






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






6. Refers to the production of power during overload demands






7. Change in momentum

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8. Moderate compression ratio - giving improved volumetric efficiency - but not lower discharge air temperature






9. 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






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






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






12. Working fluid is compress then preheated in regenerator






13. 1. large volums of air at medium pressures - high speed 2. free air capacities range from 2.8 to 3700 cubic meters






14. 1. lubricate sliding surfaces 2. cool bearings






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






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






17. 0.577 times the inlet pressure






18. 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






19. 1. low power consumption 2. frequent load changes 3. adjustable 4. suction valve change easily






20. 1. bare tube 2. finned tube 3. plate surface - a vacuum exists between plates






21. Rows of stationart baldes with alternating rows of moving blades






22. Pieces left on tips of turbine blading so the shrouding canbe attached to correspond with strips






23. Moisture removed by centrifugal force






24. Use antifriction bearings






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






26. 1. Split 2. double






27. Higher altitudes






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






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






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






31. 1. remove non - condensables 2. dalton's law of partial pressures 3. reciprocating or rotart pump 4. below baffles






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






33. Direct prosses applications - absorption refrigeration - heat recovery boiler






34. Unit produces electricity on an ongoing basis






35. Is the ratio of the discharge pressure to the intake pressure absolute






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

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37. On the exhaust side - drives the blower - being connected to the same shaft - increases power by 50-70% as more air is forced into the engine






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






39. Equal and opposite reation

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






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






42. Controlled pressure from intermediate stages of turbine






43. Use teflon or carbon to lubricate system






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






45. Air flow is upward






46. Entire collection of all component

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






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






49. 1. brass 2. copper 3. cupronickel






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