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






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






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






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






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






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






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






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






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






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






12. A measuring device.






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






14. A single electron or one of two or more electrons in the outer shell of an atom that is responsible for the chemical properties of an atom.






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






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






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






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






19. One millionth of an ampere.






20. The unit of Electro- Motive Force






21. One- thousandth of a ampere






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






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






24. The time rate at which work is done or energy is transferred. When a pressure of 1 volt sends a current of 1 ampere through a resistance of 1 ohm - the power in the circuit is said to be 1 watt.






25. The liquid solution (sometime a paste) in which the electrodes are placed.






26. 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)






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

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






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






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






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






32. A generator that produces alternating current.






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






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






35. In a battery - the electrode which takes up the electrons returning from the external circuit.






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






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






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






39. 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.






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






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






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






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






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






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






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






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






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






49. 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.






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