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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 POWER. 1 kilowatt = 1 -000 watts






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






3. 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.






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






5. A material with few free electrons. A structure or material used to prevent the passage of current.






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






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






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






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






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






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






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






13. 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.






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






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






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






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






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






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






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






21. An instrument for measuring electric current






22. A measuring device.






23. One million ohms.






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






25. The path of an electric current. To permit a steady flow of current - the path must be complete. Commonly - a complete circuit includes a device for the production of an electromotive force - connecting wires - and a device supplied with electricity.






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

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






28. Negative charge of electricity






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






30. One- thousandth of a ampere






31. 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)






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






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






34. The voltage dissipation between any two points in a circuit. The voltage 'dropped' or 'dissipated' in forcing current through a resistance.






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






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






37. One- thousandth of volt.






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






39. One millionth of an ohm.






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






41. 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.






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






43. One millionth of an ampere.






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






45. 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.






46. A generator that produces alternating current.






47. The unit of Electro- Motive Force






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






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






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