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






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






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






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






5. 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.






6. A measuring device.






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






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






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






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






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






12. 1.Speed of conductors cutting lines of force 2.Strength of the magnetic field 3.Length of conductors cutting through the field






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






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






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






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






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






18. One- thousandth of a ampere






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






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






21. The unit of Electro- Motive Force






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






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






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






25. A rod or strip composed of two metals having different rates or coefficients of expansion. Upon being heated - it bends in a direction which causes the material with the greater rate of expansion to be on the outside.






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






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






28. One millionth of an ampere.






29. A complete path provided for the flow of electrons. Consists of a source - with a closed conducting path leading from the source and back to the source






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






31. A cell which is rechargeable. Uses materials which change in compostition during delivery of current - but may be restored to original condition upon recharge.






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






33. Negative charge of electricity






34. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)






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






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






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






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






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






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






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






42. 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.






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






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






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






46. One millionth of an ohm.






47. One- thousandth of volt.






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

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






50. Total and complete opposition to the flow of electrons