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






2. 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.






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






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






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






6. 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.






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






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






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






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






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

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






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






14. A rod or strip composed of two metals having different rates or coefficients of expansion. Upon being heated - it bends in a direction which causes the material with the greater rate of expansion to be on the outside.






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

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






17. 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.






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






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






20. A current which reverses in direction at regularly recurring intervals - the total flow in one direction being equal to that in the other direction.






21. 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)






22. 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.






23. 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.






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






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






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






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






28. One millionth of an ampere.






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






30. One- thousandth of volt.






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






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






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






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






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






36. One millionth of a volt.






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






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






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






40. A measuring device.






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






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






43. One millionth of an ohm.






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






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






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






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






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






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






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