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Power Engineering 3

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. Conencted to transformers or inside switchgears






2. Thermal coutout and a fuse link - cutout at 500% of normal current - greatest protection for motor currents






3. % moisture - fixed carbon






4. Renewable resource and usually waste products of other process and uses






5. Hard - dense - very brittle and shiny black with no layering - low % of volatile matter. Consists mostly of methane. Is expensive - high ignition temperature and burns slowly - and a lower heating value than high grade bituminous






6. Used in building over 3 stores - 14m






7. Shunt parallel withe the armature and series field






8. PLC control diagram






9. 1. identify probable emergencies 2. notification process (who and when) 3. determine immediate personal actions to be taken 4. minimize adverse effects on personnel - property and environment






10. P = 1(squared)R






11. The direction of an induced emf is always such that any current it produces opposes - trhrough its magnetic effects the charge inducing the emf


12. Useful amount of flux per pole






13. Ring type joint gaskets






14. Use of a fluidized bed of limestone reducing nitrous oxides and sulfur dioxide






15. 80m - due to lag - pressure drop






16. Current before voltage - capacitance load






17. Takes into consideration the speed at which the variable is deviating from the SP - only occurs when there is a change in error rate






18. Intensity of heat radiation increases proportionately to the 4th power of absolute temperature of a body






19. 1. dry barrel - valve located below the frost line 2. wet barrel






20. Actions of first responders 1. sound alarm 2. risk assessment 3. attempt to extinguish






21. Has a high magnetic reluctance






22. 1.product information 2. hazardous ingredients 3. physical data 4. fire and explosion data 5. reactivity data 6. toxicological data 7. preventive measures 8. first aid 9. preperation information






23. Alternators






24. Oxidizing materials






25. Help reverse the current int eh coil passing under the brushes - commutations






26. Orginate from atmospheric air - temperatures above 1500






27. Salient and cylindrical






28. Is the current in any line voltage - phase volts






29. Contains 1 kg of oxygen






30. Is the combined effect of inductive reactance and capacitive reactance






31. Power factor






32. Pancake or concentric






33. Low accuracy at low velocities - can plug with certain fluids - sensitive to local disturbances






34. RMS; AC voltage that equals DC voltage that will do the same amount of work. For an AC sine wave it is 0.707 x peak voltage. Effective value






35. 450kPa and 32 l/s






36. Point level measurement used to open or close a circuit






37. Establish rules of safety covering the design - fabrication - and inspection during construction of boilers and pressure vessels - and to interpret these rules when questions arise






38. Depends on both the amount and time duration of the deviation - it operates until it produces exact correction






39. Can switch the direction of an alternator






40. Self excited - armature fields conencted in series - initial emf depends on residual magnetism - field current is also the load current






41. 1. temperature 2. time for reaction 3. mixing 4. amounts of nitrigon and oxygen available






42. Refer to pg 27.2.1 of ASME academic extract - do not interpolate between values - select next higher rated value






43. Conductor being moved - 'cut' magnetic fields of flux relative to the conductor movement - using fleming's right hand rule






44. Gas only applications - lobe impellars






45. The fule - the method of firing - the burner and furnace design and load on boiler






46. Aka rotameter - low cost - simple - low pressure drop - accurate






47. Work to elimate errors






48. Control of supply side disturbances by feedback - single loop






49. 1. anthracite 2. bituminous 3. sub- bituminous 4. lignite






50. Counter emf - current limit and time limit






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