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






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






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






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






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






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






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






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






9. 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.






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






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






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






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






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






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






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






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






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






19. A unit of power.






20. Opposition to current flow






21. The rotating member of an electrical machine.






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






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






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

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






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






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






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

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






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






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






34. 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.






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






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






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






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






39. One- thousandth of volt.






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






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






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






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






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






45. The property of a material that opposes the flow of current.






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






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






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






49. One millionth of a volt.






50. A generator that produces alternating current.