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. Contains 1 kg of oxygen






2. Wander erratically






3. Allows control from one location






4. Power in watts






5. Used in building over 3 stores - 14m






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






7. Used for combustion calculations






8. Where shock loading may occur






9. Organically bound component of the fuel






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






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






12. 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






13. In AC it is equal to the effective current x voltage - only when in phase






14. % moisture - fixed carbon






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






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






17. Supply and demand control






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






19. Operates on the principle that the resistance of metal increases in direct proportional to increases in temperature - positve co- efficient - wheatstone bridge






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






21. Shunt parallel with the armature






22. Discrete input - on - off control






23. Thermally sensitive resistor - negative tempertaure co- efficient - non linear with temperature






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






25. 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






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






27. 6 times its normal full load current






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






29. Used in bellows






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






31. Feeds current to or from the armature's conductors






32. Used in feedforward control - signal is fed into the model to trim model parameters - components for imperfections in the feedforward control






33. Ring type joint gaskets






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






35. Poisonous and infectious materials






36. Liquid being measured must be able to mix with the gas or air in the bubbler






37. The rate (derivative control) will counter it and allow the proportional band and integral begin earlier






38. Is the amount of air in excess of theoretical air






39. The technology used to transmit signals from one loop device to another






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






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






42. Dangerously reactive






43. Oscillate - on - off control behavior






44. Correct inductive loads - unit is called a farad (F) and the symbol used is 'c'






45. Due to upsets in the secondary variable - first controller called the 'slave' or inner loop and the second controller is called the 'master' or outer loop






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






47. RTD's in slots of stator windings






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






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






50. Calorifc value formula