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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 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.






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






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






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






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






6. One million ohms.






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






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






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






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






11. One- thousandth of a ampere






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






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






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






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






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






17. A generator that produces alternating current.






18. 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)






19. 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.






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






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






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






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






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






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






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






27. The unit of Electro- Motive Force






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






29. 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.






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






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

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






33. 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.






34. Negative charge of electricity






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






36. One millionth of an ohm.






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






38. One- thousandth of volt.






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






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






41. Opposition to current flow






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






43. Several secondary cells connected together for either a greater voltage or current output.






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






45. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.






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






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






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






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






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