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






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






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. Meter used to measure resistance in an electrical circuit.






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






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






7. The rotating member of an electrical machine.






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






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






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






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






12. 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.






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






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






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






16. 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)






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






18. A measuring device.






19. A circuit with only one path for current to flow. There are no branches.






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






21. The unit of Electro- Motive Force






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






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






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






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






26. 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.






27. 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.






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






29. Opposition to current flow






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






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






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






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






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






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






36. One million ohms.






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






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






40. 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.






41. One millionth of an ohm.






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






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






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






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






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

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






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






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






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