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






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






3. (EMF) The force created by an electric generator (or by other means) which causes current to flow. (Same as Voltage - Volts - Electric Potential - Pressure).






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






5. A unit of power.






6. A cell which is rechargeable. Uses materials which change in compostition during delivery of current - but may be restored to original condition upon recharge.






7. A circuit with only one path for current to flow. There are no branches.






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






9. Several secondary cells connected together for either a greater voltage or current output.






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






11. The unit of electromotive force - potential - pressure - or voltage which produces a current of one ampere in a circuit having a resistance of 1 ohm. This is the force created to move electrons through a circuit.






12. 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.






13. The condition where the free electrons are caused to move in the same direction along or through a conductor.






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






15. 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.






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






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






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






19. A device which capacity is its chief electrical property; a device for storing or holding an electric charge; a capacitor.






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






21. That property of a material which determines how readily it conducts magnetic lines of flux. Opposite magnetic quality or conductivity.






22. An alternating current which current cycle begins later that its voltage cycle.






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






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






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






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






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






28. Smallest part a substance can physically divided into composed of 2 or more atoms.






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






30. Total and complete opposition to the flow of electrons






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






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






33. An instrument for measuring electric current






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






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






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






37. One millionth of an ampere.






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






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

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






41. 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)






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






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






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






45. Opposition to current flow






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






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






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






49. One- thousandth of volt.






50. A generator that produces alternating current.







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