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






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






3. Negative charge of electricity






4. One- thousandth of a ampere






5. 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.






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






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






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






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






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






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






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






13. 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.






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






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






16. 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.






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






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






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






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






21. A unit of power.






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






23. Opposition to current flow






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






25. Any device which may be placed in the circuit and which offers opposition to the flow of electrons around the circuit.






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






27. 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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28. A rate of movement of electrons through a conductor.






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






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






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






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






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






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






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






36. An instrument for measuring electric current






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






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






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






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






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






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

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






44. 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






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






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






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






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






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






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