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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. One millionth of a volt.






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






4. 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.






5. The rotating member of an electrical machine.






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






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






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






9. An instrument for measuring electric current






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






11. 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.






12. One millionth of an ohm.






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






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






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






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






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






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






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






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






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






22. Opposition to current flow






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






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






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






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






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






28. Negative charge of electricity






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






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






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






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






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






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






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






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






37. Total and complete opposition to the flow of electrons






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. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.






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






41. 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






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






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






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






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






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






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






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






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






50. One- thousandth of volt.