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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. One- thousandth of volt.






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






3. 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.






4. 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.






5. 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.






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






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






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






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






10. 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






11. The rotating member of an electrical machine.






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






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

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






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






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






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






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






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






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






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






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






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






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






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






26. One million ohms.






27. 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.






28. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)






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






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






31. 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)






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






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






34. One- thousandth of a ampere






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






36. Shows relationship between Current - Voltage - Wattage and Resistance.

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37. One millionth of an ampere.






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






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






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






41. 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.






42. A generator that produces alternating current.






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






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






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






46. A measuring device.






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






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






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






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