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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. Pressure does not drop across the moving blades






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






3. Discharge steam when excessive backpressure exists






4. 1. air compressed to 1100-3000kPa 2. combustion at 2000C 3. mixed with air - cooled to 918C on exit 4. combustor gases go to turbine 5. gases from turbine leave at atmospheric pressure and 500-640C






5. Increase pressure affecting performance of condenser but do not incresase temperature






6. Change in direction causing a turbine to move






7. Grit chambers and screens for waster water system






8. Throttle body






9. 1. can - annular 2. annular 3. single- can






10. 1. Responsive to speed changes 2. responsive to pressurre changes






11. Large turbines with a generator on each shaft






12. 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






13. Each shaft needs a thrust bearing






14. 1. internal 2. external 3. equipment vendors 4. chemical suppliers 5. office equipement vendors






15. Centrifugal pumps






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






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






18. Type of hydrometer indicating % of salt in solution






19. 'booster' compressor






20. Air flow is horizontal






21. Pressure drops across the moving blades






22. Use of a rotary lobe air blower






23. Refers only to specificly to the turbine section

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24. 1. lubricate sliding surfaces 2. cool bearings






25. Condensing turbines exhaust steam at...






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






27. Results in pressure drop and increased velocity






28. A group of one or more bays - including one or more units arranged in a single or continuous structure






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






30. U- tubes - surface areas less than 18 cubic meters - has small heat transfer surface






31. 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






32. Radiator type






33. One or more tube bundles - in one or more bays for an individual service or process






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






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






36. Attempting to pick up a load - turbines in parallel






37. Servomotors






38. Atmospheric or hyperbolic






39. Needs to a high vacuum present in system before charging






40. No dissolved oxygen but does contain nitrates






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






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






43. 1. Single flow 2. double flow 3. automatic extraction 4. backpressure






44. As prime movers in pulp and paper industry






45. 1. Flyweights 2. coutner spring 3. function based on centrifugal force






46. Defined as one or more tube bundle - served by two or more fans complete with aux equipment






47. At high temperatures a material stretches






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

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






50. Same principle as a turbine but acting in reverse