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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 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.






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






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






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






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






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






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






8. 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.






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






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






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






12. One- thousandth of volt.






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






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






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






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






17. One millionth of an ohm.






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






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






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






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






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






23. 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)






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






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






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






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






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






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






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






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






32. One million ohms.






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






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






35. The rotating member of an electrical machine.






36. The unit of Electro- Motive Force






37. Negative charge of electricity






38. One millionth of an ampere.






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






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






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

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






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






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






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






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






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






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






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






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