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


2. 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.






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






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






5. One- thousandth of a ampere






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






7. 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.






8. A generator that produces alternating current.






9. The moving part of a dynamo or motor consisting of coils of wire around an iron core.






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






11. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.






12. One millionth of an ampere.






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






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






15. The unit of Electro- Motive Force






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






17. One millionth of a volt.






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






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






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






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






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






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






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






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






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






27. A circuit with two or more paths for the current to take.






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






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


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






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






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






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






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






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






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






37. 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






38. An instrument for measuring electric current






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






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






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






42. 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)






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






44. A device used to change the voltage of an alternating current circuit.






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






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






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






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






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






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