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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. Seperately forged discs or wheels and shrunk onto shaft






2. Has steam directed through baffles making 4 passes






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






4. Higher power and speeds






5. Made of polyethylene - skimming from the surface






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






7. Calcium chloride and water - -51






8. Used to satisfy process steam requirements






9. More rounded than impulse blading






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






11. 1. Carbon ring 2. labyrinth seal 3. water seal






12. 1. compressor discharge 2. condenser 3. liquid receiver






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






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






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






16. '3 ports' 1. intake and exhaust 2. compression and ignititon






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






18. Entire collection of all component

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






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






21. Most widely used - least amount of steam






22. Waste heat only






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






24. 1. Split 2. double






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






26. The space wherein the liquid refrigerant absorbs heat and boils






27. 1. lubricate sliding surfaces 2. cool bearings






28. Center- to- center distance between baffles






29. Same principle as a turbine but acting in reverse






30. Throttle body






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






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






33. 1. Pressure compounding 2. velocity compounding 3. pressure- velocity compounding






34. Moving blades on a rotor






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






36. Use teflon or carbon to lubricate system






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






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






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






40. Refers to the production of power during overload demands






41. 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






42. The condenser






43. Used on large turbines to supply lower part of the bearing with oil to prevent metal to metal contact






44. Chrome- iron alloy






45. Discharge steam when excessive backpressure exists






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






47. Good thermal properties - boiling point of -33.3 - pure anhydrous ammonia is noncorrosive - cheap - not miscible in oil - toxic






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






49. Ground water monitoring device






50. Eliminates thrust - steam admitted midway along casing