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






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






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






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






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






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






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






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






9. Opposition to current flow






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






11. 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.






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






13. A generator that produces alternating current.






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






15. A unit of power.






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






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






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






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






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






21. The unit of Electro- Motive Force






22. 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.






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






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






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






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






27. 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.






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






29. 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)






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






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






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






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






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






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






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






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






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






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






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






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






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






43. A measuring device.






44. One millionth of a volt.






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






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






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






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






49. 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






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