Test your basic knowledge |

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. Unit of a fuel that is burned completely - for gas use kJ/cubic meter at standard 16 degrees at 101.3kPa






2. Large disturnbance and frequency could cause loop not to work properly - processes with large lag will not control






3. Expensive - externally mounted - not accurate for densisty changes






4. 1. carbon 2. hydrogen 3. sulphur






5. One controlled variable and two manipulated variable as output - 'Duplex Controlres






6. Higher heating values include the latent heat of the water vapor in the products of combustion






7. 'hops'






8. Rectifier - battery bank - inverterm static switch - 1/4 cycle response time - generator supplies power to UPS - bumpless transfer - 60 second delay on power restore






9. Condensate capacity (under start up conditions) - Condensate temperature the trap operates under - The pressure differential across the trap under normal operating conditions






10. Uses Farady's law of electromagnetic induction






11. Terminal voltage decreases with increase of lead - field weakened by reduction of emf and it depends on the residual magnetism in the field circuit






12. Sum of current flowing away = sum flowing towards - and any closed path in an electrical circuit the sum of the voltages is zero as current passes through the resistors


13. Prevents/dampens external vibration






14. 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






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






16. Thermocouple connected in series






17. To ensure a supply of dry steam throughout the steam system






18. Current flow only when the current is changing in value






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






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






21. Acts like on - off controller






22. 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






23. Shunt parallel with the armature






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






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






26. Orginate from atmospheric air - temperatures above 1500






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






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






29. Creates heat






30. High heat transfer coefficient - low density (1/4 of air) and can increase output up to 20-30% of transformer






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






32. Faults in the system causing to break up into islands - an imbalance between the generator and the load






33. Have 2 conductors - example is telephone and radio currents






34. Stationary conductors






35. Shunt - series and compound wound






36. The chemical union of the combustible elements of a fuel and the oxygen in the air - at a rate that produces useful heat energy






37. The ability of a coil to produce flux






38. 1. Class A - ordinary combustibles 2. Class B - vapor- air mixtures 3. Class C - electrical 4. Class D - combustible metals






39. Current after voltage - inductive load






40. Only need 2 brushes






41. Developed to replace control loops






42. 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






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






44. Lowers wasted heat - lowers power requriements for forced draft and induced draft fans






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






46. 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






47. 85% or less of normal value power






48. Dangerously reactive






49. Calorifc value formula






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