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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. individual pump system 2. distributor system 3. common rail system






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






3. 1. compressor section 2. combustor 3. turbine section






4. Has steam directed through baffles making 4 passes






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






6. Straight condensing






7. 1. oil reservoir 2. filters 3. pumps 4. coolers 5. protective monitoring devices






8. Polymers (polyelectrolytes)






9. '3 ports' 1. intake and exhaust 2. compression and ignititon






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






11. Reduces steam pressure and velocity in two or more steps






12. The condenser






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






14. Waste heat only






15. Small pressure drop






16. 1. increases net power 2. clean working fluid 3. cheap fuel can be used






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






18. Eliminates thrust - steam admitted midway along casing






19. 1. high power to weight ration 2. use of different liquids and gaseous fuels 3. start rapidly 4. simple and compact design 5. reliable 6. remote operation






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






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






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






23. 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






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






25. Reduction of NOx through ammonia injection priot to catalyst - lowering NOx to 10ppm






26. Grit chambers and screens for waster water system






27. Increased efficiency due to decreased frictional losses






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






29. Results in pressure drop and increased velocity






30. Sagging and hogging - 20-40rpm






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






32. Recuperative category - high pressure






33. Equal and opposite reation

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34. Used to open and close the by- pass port in a stator - varies the volum compressed air being produced






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






36. Meters liquid from liquid line into evaporator at a rate equal at which vaporization of liquid is occuring






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






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






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






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






41. Made of polyethylene - skimming from the surface






42. More rounded than impulse blading






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






44. Calcium chloride and water - -51






45. Chrome- iron alloy






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






47. 1. Aero- derivate 2. Heavy duty






48. Control a steady backpressure - sensing element in exhuast line






49. 1. Difference in pressure across moving blades 2. steam leaks around edges 3. minimal blade clearances 4. unbalanced thrust






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