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Basic Electricity Vocab

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. A circuit with more than one path. Current branches to flow in every available path.






2. A short circuit between two energized conductors and/or an energized conductor and a grounded phase. Very high current flow.

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3. Rate of electrons flow (current flow). When one 'Coulomb' of electrons pass a given point in one second.






4. A unit of POWER. 1 kilowatt = 1 -000 watts






5. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.






6. A current which reverses in direction at regularly recurring intervals - the total flow in one direction being equal to that in the other direction.






7. A measuring device.






8. One- thousandth of a ampere






9. An instrument for measuring electric current






10. One million ohms.






11. Electric charges at rest. Caused by friction of materials - where a surplus of electrons exists and may be discharged.






12. The magnetism which a material retains after the magnetic force which magnetized it has been removed.






13. Coil connected to the source of power on a transformer.






14. An instrument for measuring electromotive force in volts. It must be connected across the load that causes the votage drop.






15. A machine which utilizes magnetism to produce an EMF and consequently - an electric circuit.






16. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.






17. A single electron or one of two or more electrons in the outer shell of an atom that is responsible for the chemical properties of an atom.






18. The part of the magnet where the magnetic force is most concentrated. Commonly referred to as the North or South pole or the positive or negative poles)






19. One- thousandth of volt.






20. A very low resistance path placed in a circuit in such a manner as to allow an excessive current flow.






21. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.






22. The voltage dissipation between any two points in a circuit. The voltage 'dropped' or 'dissipated' in forcing current through a resistance.






23. The liquid solution (sometime a paste) in which the electrodes are placed.






24. In a battery - the electrode which takes up the electrons returning from the external circuit.






25. A generator that produces alternating current.






26. A complete path provided for the flow of electrons. Consists of a source - with a closed conducting path leading from the source and back to the source






27. Single POSITIVE electrical charge - located in the middle of an atom.






28. The complete path through which the lines of force travel - leaving the north pole and re- entering the south pole.






29. In an electrical circuit - or part of an electric circuit - the intensity of the current is equal to the electromotive force that drives it divided by the resistance of the circuit.

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30. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).






31. The space around a magnet in which the magnetic force is felt.






32. Single NEGATIVE electrical charge. Orbits around the nucleus some in paths close to the nucleus - others in paths varying distance from the nucleus.






33. The center portion of an atom which has a positive electrical charge.






34. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)






35. A circuit in which there is resistance (load) connected both in series and parallel.






36. The rotating member of an electrical machine.






37. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.






38. Negative charge of electricity






39. Hardened steel which has been magnetized artificially and which retains its magnetic properties






40. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.






41. A unit of work or ENERGY. 1 kilowatt hour = 1 -000 watt hours






42. Opposition to current flow






43. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.






44. A material which CANNOT be magnetized. Example: Wood - Glass - Brass - Rubber...






45. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.






46. A rod or strip composed of two metals having different rates or coefficients of expansion. Upon being heated - it bends in a direction which causes the material with the greater rate of expansion to be on the outside.






47. A resistor designed so that its resistance is readily adjusted.






48. A connection of circuit of low resistance. Current through each of the end- to- end devices is exactly the same. Only one path for the current.






49. The dissimilar metals which are placed in an electrolyte to form a cell.






50. The number of cycles per second. Example: 60 cycles per second alternating current.