Test your basic knowledge |

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






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






3. 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.






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






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






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






7. 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






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






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






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






11. The rotating member of an electrical machine.






12. An instrument for measuring electric current






13. 1.Material itself (Atomic Structure - Good conductor or Bad) 2.Length of the conductor 3.Cross - sectional area (Size) 4.Temperature






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






15. The time rate at which work is done or energy is transferred. When a pressure of 1 volt sends a current of 1 ampere through a resistance of 1 ohm - the power in the circuit is said to be 1 watt.






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






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






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






19. Occurs when a stream of electrons are caused to move through a conductor.






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






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






22. A unit of power.






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






24. 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.






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






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






27. 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.






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






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






30. The unit of Electro- Motive Force






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






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






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






34. A measuring device.






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






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






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






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






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






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






41. The opposite ends of a magnet where the magnetism is concentrated. Each magnet has two poles - designated as north and south.






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






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






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






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






46. 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.






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






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


49. Positive charge of electricity. Located in the nucleus of the atom.






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