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. 1. deman reservoir 2. avoid overloading compressor 3. dampens deew point and temperature spikes rom air dryer






2. 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






3. Integral part of the governing system - in the front end and engages at 10-12% above normal operating speed






4. Working fluid is compress then preheated in regenerator






5. Hydraulic cylinder or pisston on a governor






6. Driving rotating equipment






7. Pieces left on tips of turbine blading so the shrouding canbe attached to correspond with strips






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






9. 1. single acting 2. double acting 3. two stage 4. tandem (first stage double acting - 2nd single) 5. free piston






10. No dissolved oxygen but does contain nitrates






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






12. 1. Condensing 2. non - condensing (backpressure)






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






14. 1. plate 2. channel






15. Grit chambers and screens for waster water system






16. Recuperative category - high pressure






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






18. 'huff and puff' methods

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


19. Small pressure drop






20. A verticle well is used to increase the NPSH - gives better performance and less cavitation






21. 1. walnuts 2. rice 3. carbo- blase 4. offline water wash - best method






22. Countries with small grids or specail grid requirements - has a high efficiency at base loads






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






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






25. Throttle body






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






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






28. 1. evaporator coil






29. Reversal of flow within a compressor - rush in from discharge side sending a shock wave inside compressor






30. Atmospheric or hyperbolic






31. 1. reduce total energy bill 2. compact - les maintenance 3. short start up time 4. wide range of configurations






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






33. Have advantage of high efficiencies - 10% greater than centrifugal compressors






34. 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






35. Each shaft needs a thrust bearing






36. Cooling of air between stages - condense below atmospheric temperature removing moisture - not primary function






37. Has steam directed through baffles making 4 passes






38. Either fixed production or varying






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






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






41. 1. start- stop (sliding vane) 2. load- unload (rotary) 3. modulating inlet 4. mircoprocessor based control






42. Higher power and speeds






43. Straight condensing






44. Cast with special nickel based alloys - Inconel - Udimet - Waspalloy - Hastelloy






45. DLN - reduce NOx down to 9ppm but have an increased combustion area






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






47. Steam expands and pressure drops as it passes through moving blades - unbalance pressure






48. Pressure does not drop across the moving blades






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






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