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






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






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






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






5. One millionth of an ohm.






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






7. 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






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






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






10. 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.






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






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






13. Certain quantity of electrons. The unit of measure that specifies the rate at which electric current flows per second.






14. One millionth of an ampere.






15. 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.






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






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






18. One- thousandth of volt.






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






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






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

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

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






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






25. 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)






26. The unit of Electro- Motive Force






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






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






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






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






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






32. 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.






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






34. 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.






35. One- thousandth of a ampere






36. 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.






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






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






39. 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.






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






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






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






43. A generator that produces alternating current.






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






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






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






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






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






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






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