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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 resistor designed so that its resistance is readily adjusted.






2. A coil of wire designed to act as a magnet as a result of carrying an electrical current. It is usually wound on a soft iron core.






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






4. A transformer designed to raise the voltage of an alternating current. Most common use; In a generating plant to raise the voltage.






5. A material which can be magnetized - principally iron.






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






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






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






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






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






11. Certain quantity of electrons. The unit of measure that specifies the rate at which electric current flows per second.






12. A cell which is composed of certain materials which are used up during the process of delivering electric current.






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

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14. A complete sequence of events - as an alternating- current cycle.






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






16. One millionth of a volt.






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






18. One- thousandth of volt.






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






20. A rate of movement of electrons through a conductor.






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






22. 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.






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






24. An alternating current which current cycle begins earlier than its voltage cycle.






25. Lines representing the direction of the magnetic force in a magnetic field.






26. Shows relationship between Current - Voltage - Wattage and Resistance.

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






28. The area surrounding a magnet in which magnetic properties are exhibited






29. Total and complete opposition to the flow of electrons






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






31. Term applied to the loss of voltage in forcing current through any portion of a circuit. Different factors will cause a drop; material - size - (cross - sectional area) length - temperature.






32. One- thousandth of a ampere






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






34. Meter used to measure resistance in an electrical circuit.






35. Fundamental constituents of matter. The 'elements' (tiny particles) which come together in various combinations to form molecules of many substances.






36. 1.Speed of conductors cutting lines of force 2.Strength of the magnetic field 3.Length of conductors cutting through the field






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






38. The difference between the electrical condition of one point in an electric circuit and that of another point which tends to cause current to flow between two points. Measured in volts.






39. (Lode Stone) Certain type of mineral ore which has the natural Properties of a magnet.






40. Negative charge of electricity






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






42. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.






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






44. A unit of power.






45. The rotating member of an electrical machine.






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






47. Any device which may be placed in the circuit and which offers opposition to the flow of electrons around the circuit.






48. The property of a material that opposes the flow of current.






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






50. Iron and certain alloys of iron which are magnetized by artificial means.