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






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






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






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






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






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






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






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






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






11. One- thousandth of volt.






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






13. 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.






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






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






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






17. The rotating member of an electrical machine.






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

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






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






21. The unit of Electro- Motive Force






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






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






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






25. Electric charges at rest. Caused by friction of materials - where a surplus of electrons exists and may be discharged.






26. A measuring device.






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






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






29. A generator that produces alternating current.






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






31. (EMF) The force created by an electric generator (or by other means) which causes current to flow. (Same as Voltage - Volts - Electric Potential - Pressure).






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






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






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






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






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






37. Negative charge of electricity






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






39. 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






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






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






42. Fundamental constituents of matter. The 'elements' (tiny particles) which come together in various combinations to form molecules of many substances.






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






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






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






46. One millionth of a volt.






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






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

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49. One- thousandth of a ampere






50. 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.