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






2. Pressure does not drop across the moving blades






3. Cool compressed air before point of use






4. 75 -000 to 100 -00 hours of operation






5. Working fluid is compress then preheated in regenerator






6. Large turbines with a generator on each shaft






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






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






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






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






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






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






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






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






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






16. 1. charge drawn into cylinder is air only 2. fuel injected at high pressures 3. ignition due to high compression temperatuers






17. Chrome- iron alloy






18. Has steam directed through baffles making 4 passes






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






20. 1. cooling water in direct contact 2. drains into a hotwell 3. barometric leg - condenser sits 10.34m above hotwell






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






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






23. Center- to- center distance between baffles






24. 'huff and puff' methods

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






26. Type of hydrometer indicating % of salt in solution






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






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






29. Air flow is upward






30. Does not contain dissolved oxygen






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






32. Throttle body






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






34. Controlled pressure from intermediate stages of turbine






35. 1. titling pad Kingsbury (journal bearing) 2. Michel thrust bearing






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






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






38. The condenser






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






40. An 'overrunning' clutch






41. 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






42. Dry surface coolers - no contact convection hx - aka finned tube exchangers






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






44. Sagging and hogging - 20-40rpm






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






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






47. Refers only to specificly to the turbine section

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48. Eliminates thrust - steam admitted midway along casing






49. 1. to increase steam production 2. control superheater temperatures 3. meet process demands






50. Velocity increases as passes through nozzles