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






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






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






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






5. Coil connected to the source of power on a transformer.






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






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






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






9. Negative charge of electricity






10. A generator that produces alternating current.






11. 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






12. A measuring device.






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






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






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






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






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






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






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






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






21. The rotating member of an electrical machine.






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






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






24. The unit of resistance. It is the resistance through which a voltage of 1 volt will produce a current of 1 ampere.






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






26. 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.






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






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






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






30. 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.






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






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






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






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






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






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






37. A material that has many free electrons thus allowing electric current to flow through it easily.






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






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






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






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






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






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






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






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






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






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






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






49. The unit of Electro- Motive Force






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