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






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






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






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

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






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






7. In an electrical circuit - or part of an electric circuit - the intensity of the current is equal to the electromotive force that drives it divided by the resistance of the circuit.

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

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






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






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






12. An alternating current which current cycle begins earlier than its voltage cycle.






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






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






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






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






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






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






19. Total and complete opposition to the flow of electrons






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






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






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






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






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






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






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






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






28. A cell which is rechargeable. Uses materials which change in compostition during delivery of current - but may be restored to original condition upon recharge.






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






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






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






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






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






34. 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






35. 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.






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






37. One- thousandth of a ampere






38. Opposition to current flow






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






40. The rotating member of an electrical machine.






41. 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.






42. A unit of power.






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






44. 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.






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






46. One millionth of an ohm.






47. One- thousandth of volt.






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






49. 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.






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