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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. Can act as an induction motor - 3 directional inverse time overcurrent relays






2. Equal to the charge on 6.242 x 10 to 18th power of electrons - quantity of electricity






3. 450kPa and 32 l/s






4. The ratio of change of output to change of input






5. 1. product identifier 2.hazard symbol 3. risk phases 4. precautionary statement 5. fist aid 6. supplier information 7. reference to MSDS






6. Used to linearize the measurement signal






7. PLC control diagram






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






9. 1. line impedance starters - resistance in series for each phase 2. star- delta - using a special switch - inexpensive - current surge 3. auto- transformer - expensive - best starting torque






10. 1. dry chemical 2. gaseous 3. dry poweders 4. water 5. foam






11. Current through all resistors






12. Impact force - +- 0.5% accuracy - good in corrosive environments - up to 10000kPa and 400 degrees






13. The sum of individual current through each loop or path are equal to the total current






14. Opposition to liquid head pressure






15. Heavy load deman






16. Promote safety and uniformity in the design - construction - installation - operation - testing - and repair of boilers - pressure vessels - and related equipment






17. Prevents/dampens external vibration






18. 1. pneumatic 2. electronic 3. optical






19. A reference point of zero Voltage potential






20. 1. natural gas 5-10% 2. oil 5-15% 3. coal (pulverized) 15-30% 4. coal (stoker fired) 25-50%






21. Is the total opposition in a curcuit to the flow of the current






22. RTU (remote terminal unit) and MTU (master terminal unit) - modems or data communication equipement (DCE)






23. Occurs when all of the combustibles in the fuel are completely burned - but more air than the minimum theoretically required is used (excess air)






24. Constang speed - if field gets disconnected during operation - field dlux drops and motor speeds up






25. RTD's in slots of stator windings






26. Pipe thickness must be increased by 15% or 3.0mm






27. Must be registered with the Provincial Boilers and Safety Division in local area






28. Occurs when some of the elements pass to the stack






29. Current after voltage - inductive load






30. Current is the flow of positive charges from positive terminal of a voltage source - through the circuit and back to the negative terminal






31. Defined as that quantity of a substance that has a mass in kilograms equal to its molecular mass






32. Uses Farady's law of electromagnetic induction






33. Adjustable speed






34. Parallel branches - 2 series of resistors - the bridge indicates a balanced voltage condition






35. Causes current to lag behinde the applied voltage by 90 degrees






36. There is no relative movement between the rotor bars and teh flux of the rotating field - countacts speed changes






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






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






39. Negatively charge particles using high voltage DC charged particles - 95% + efficiency






40. Real power






41. Dangerously reactive






42. Current carrying conductor placed in a magnetic field and the conductor distorts the magnetic fields between the poles - fleming's left hand rule






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






44. Discrete input - on - off control






45. Interest of workers - employers - suppliers - regulators






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






47. Gas only applications - lobe impellars






48. 1. I/O cards 2. network 3. FCEs 4. controllers 5. operator console (OP/CON)






49. To cause an electric current to flow between two points in an electric circuit there must be a difference in electrical pressure or potential






50. Used up to 600V circuits - fuses are 250V and 600V made of zinc or alloy in a fiber tube. Amp sizes are 30 -60 -100 -200 -400 and 600A