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






2. 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.






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






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






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






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






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






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






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






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






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






13. One millionth of a volt.






14. The rotating member of an electrical machine.






15. Negative charge of electricity






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






17. A material with few free electrons. A structure or material used to prevent the passage of current.






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






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






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






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






22. One millionth of an ampere.






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






24. A unit of power.






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






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






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






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






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






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






31. One- thousandth of volt.






32. The unit of Electro- Motive Force






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






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






35. The process of producing an electromotive force in a conductor as a result of the cutting of magnetic lines of force by a conductor.






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






37. A measuring device.






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






40. 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.






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






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






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






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






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






46. A generator that produces alternating current.






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






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






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






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