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






2. 1. process 2. measurement 3. automatic controller 4. final control element






3. 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






4. Shunt parallel withe the armature and series field






5. Produces heavy residuals that may be suitable as fuel known as coke






6. Voltage and current reach their max values at the same time


7. Determines the % of moisture - volatile material - fixed cardon and ash - buring qualities






8. Discrete input - on - off control






9. Mircroprocessors - memory - inputs/outputs - terminals - power supply






10. 180 degrees - one pole = one pitch






11. % moisture - fixed carbon






12. Pancake or concentric






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






14. Poisonous and infectious materials






15. Has a high magnetic reluctance






16. Opposes driving torque applied to a generator






17. 'hops'






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






19. Load current is also the excitation current - never operate without a load - has high starting torque






20. Compressed gas






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






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






23. Where shock loading may occur






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






25. Self starting






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






27. 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






28. Power in watts






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






30. Stationary conductors






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






32. Exactly the theoretically amount of air necessary was supplied and the combustibles were all completely burned






33. Any 2 conductors seperated by an insulating material - unit if farad (F) - symbol used 'C'






34. Dangerously reactive






35. A reference point of zero Voltage potential






36. Second element of WHMIS






37. Technical document that provides details and information - health effects - hazard evaluation - measure to protect workers at risk of overexposure - emergency procedures






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






39. Can have a leading PF - lowering the plant energy costs






40. Counter emf - current limit and time limit






41. Dielectric constant (gas has a constant of 1) - provides continuous level measurement - used stored potential - no moving parts - can have erros due to change in constant - composition of material and temperature






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






43. Is a strategy whereby one process is controlled in a specific ration to another process variable






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






45. Range of 250mm water to 350kPa






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






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






48. Shunt parallel with the armature






49. Organically bound component of the fuel






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