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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. Same principle as a turbine but acting in reverse






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






3. Small clearances between discs on shaft to...






4. 1. commercial establishments 2. industrail processes 3. localized central heating of small plants






5. Servomotors






6. 1. lubricate sliding surfaces 2. cool bearings






7. 1. plate 2. channel






8. 1. evaporator coil






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






10. Increased efficiency due to decreased frictional losses






11. 1. thrust bearings 2. dummy pistions 3. thrust adjusting gear






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






13. Seperately forged discs or wheels and shrunk onto shaft






14. Use of a rotary lobe air blower






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






16. Discharge steam when excessive backpressure exists






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






18. 1. list of all equipment 2. PM checklist 3. fequency 4. repairs and costs 5. record keeping 6. cost management






19. 1. use clean burning fuels 2. less fuel being used - saving energy reserves 3. electrical production onsite lowers construction demands for new sites and reduces transmission line power losses






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






21. Most widely used - least amount of steam






22. No dissolved oxygen but does contain nitrates






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. 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






25. Removal of exhaust gases by blow air through






26. Large pressure drop - increase volume to match the increase in steam volume and pressure decreases






27. Each stage seperated by partitions - nozzles set into diaphragms






28. Admirally brass or Munte metal - 25-40mm thick






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






30. Cool compressed air before point of use






31. Controlled pressure from intermediate stages of turbine






32. 1. Aero- derivate 2. Heavy duty






33. Non - condensing turbine exhaust steam at...






34. Main purpose to protect the evnironment (air - water and soil) and create public awareness - involves training - monitoring and reporting






35. Working fluid is compress then preheated in regenerator






36. Refers only to specificly to the turbine section

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37. Chrome- iron alloy






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






39. The crankshaft and valve train






40. CFC group - safe nontoxic - but long atmospheric life span of 100 years - boiling point of -29.8






41. Moisture removed by centrifugal force






42. '3 ports' 1. intake and exhaust 2. compression and ignititon






43. The condenser






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






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






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






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






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






49. Grit chambers and screens for waster water system






50. Center- to- center distance between baffles