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

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






3. 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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4. 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.






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






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






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






8. An instrument for measuring electric current






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






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






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






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






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






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






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






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






17. Total and complete opposition to the flow of electrons






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






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






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






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






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






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






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






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






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






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






28. 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.






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






30. A unit of power.






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






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






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






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






35. (Lode Stone) Certain type of mineral ore which has the natural Properties of a magnet.






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






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






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






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






40. A measuring device.






41. One millionth of a volt.






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






43. 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.






44. 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.






45. One- thousandth of a ampere






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






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






48. Opposition to current flow






49. 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)






50. 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