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. Counter act force and load on thrust bearings






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






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






4. '3 ports' 1. intake and exhaust 2. compression and ignititon






5. Help maintain definite thrust toward exhaust






6. Centrifugal pumps






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






8. Moisture removed by centrifugal force






9. zeolite molecular sieve desiccant






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






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






12. Moving blades on a rotor






13. 1. inlet vane 2. electro- pneumatic control 3. microprocessor based control






14. Large turbines with a generator on each shaft






15. 1. simple design 2. less piping 3. no freezing hazard






16. Driving rotating equipment






17. Compression ignititon engines






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






19. Atmospheric or hyperbolic






20. Throttle body






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






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






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






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






25. Used for single acting compressors






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






27. Determines how much oxygen aerobic microorganisms that have been placed in the water to decompose organic matter






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






29. Forced or induced draft






30. 1. list of all equipment 2. PM checklist 3. fequency 4. repairs and costs 5. record keeping 6. cost management






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


32. No dissolved oxygen but does contain nitrates






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






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






35. Straight condensing






36. 1. prevent wear 2. reduce friction 3. remove heat 4. reduce corrosion 5. provide sealing






37. Use of a rotary lobe air blower






38. Each shaft needs a thrust bearing






39. Air flow is upward






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






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






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






43. Change in direction causing a turbine to move






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






45. Non - condensing turbine exhaust steam at...






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






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






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






49. Radiator type






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