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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 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






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






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






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






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






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






7. Total and complete opposition to the flow of electrons






8. 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.






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






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






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






12. One millionth of an ampere.






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






14. One millionth of an ohm.






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






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






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






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






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






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






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






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






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






24. 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)






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






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






27. 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.






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






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






30. One millionth of a volt.






31. The path of an electric current. To permit a steady flow of current - the path must be complete. Commonly - a complete circuit includes a device for the production of an electromotive force - connecting wires - and a device supplied with electricity.






32. 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.






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






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






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






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






37. The rotating member of an electrical machine.






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






39. 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.






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






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






42. 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.






43. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.






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






45. Negative charge of electricity






46. One million ohms.






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






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






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






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