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






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






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






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






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






6. 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)






7. The unit of Electro- Motive Force






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






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






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






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






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






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






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






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






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






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






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






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






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






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






22. A measuring device.






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






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






25. 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.






26. 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.






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






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






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


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






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






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






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






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






35. Total and complete opposition to the flow of electrons






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






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






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






39. One- thousandth of volt.






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






41. Opposition to current flow






42. 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.






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






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






45. One millionth of an ampere.






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






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






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






49. Iron and certain alloys of iron which are magnetized by artificial means.






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