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






2. A unit of power.






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






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






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






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

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






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






9. One- thousandth of a ampere






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






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






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






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






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






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






16. Negative charge of electricity






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






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






19. One millionth of a volt.






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






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






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






23. A measuring device.






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






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






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






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






28. One million ohms.






29. One millionth of an ampere.






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






31. An instrument for measuring electric current






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






33. 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.






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






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






36. 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)






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






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






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






40. 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.






41. Electric charges at rest. Caused by friction of materials - where a surplus of electrons exists and may be discharged.






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






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






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






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






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






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






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






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






50. 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.