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. Help maintain definite thrust toward exhaust






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






3. Sagging and hogging - 20-40rpm






4. zeolite molecular sieve desiccant






5. Results in pressure drop and increased velocity






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






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






8. Small pressure drop






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






10. Change in direction causing a turbine to move






11. Means to come together and form one mass - removes oil and water from air






12. Used for single acting compressors






13. At high temperatures a material stretches






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






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






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






17. Produce and maintain a vacuum at the turbine exhaust allowing steam to expand to a lower pressure and do more work






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






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






20. Made of polyethylene - skimming from the surface






21. Polymers (polyelectrolytes)






22. Refers only to specificly to the turbine section

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23. Pressure drops across the moving blades






24. 1. activated sludge 2. rotating biological contactors 3. trickling filters






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






26. 1. Aero- derivate 2. Heavy duty






27. Too small to settle out - add floc






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






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






30. Very high speed with extremely high centrigufal force and high frictional losses






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






32. Removal of exhaust gases by blow air through






33. Grit chambers and screens for waster water system






34. 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






35. 1. stabilize flow through air driers 2. additional moisture seperation 3. storage capacity






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






37. Change in momentum

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






39. 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






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






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






42. 75 -000 to 100 -00 hours of operation






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






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






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






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






47. 1. lubricate sliding surfaces 2. cool bearings






48. Forced or induced draft






49. Air flow is horizontal






50. Higher power and speeds