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






2. 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.






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






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






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






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






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






8. The unit of Electro- Motive Force






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






10. Hardened steel which has been magnetized artificially and which retains its magnetic properties






11. A generator that produces alternating current.






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






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






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






15. One millionth of an ampere.






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






17. 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.






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






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






20. 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.






21. 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.






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






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






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






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






26. A unit of power.






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






28. 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.






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






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






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






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






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






34. The rotating member of an electrical machine.






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






36. A device which capacity is its chief electrical property; a device for storing or holding an electric charge; a capacitor.






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






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






39. One million ohms.






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






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






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






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






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






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






46. One millionth of an ohm.






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






48. 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.






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






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