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






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






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






4. 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.






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






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






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






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






9. 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.






10. 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.






11. Total and complete opposition to the flow of electrons






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






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






14. Negative charge of electricity






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






16. 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.






17. One million ohms.






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






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






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






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






22. The moving part of a dynamo or motor consisting of coils of wire around an iron core.






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






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






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






26. The unit of Electro- Motive Force






27. A short circuit between two energized conductors and/or an energized conductor and a grounded phase. Very high current flow.

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28. An instrument for measuring electric current






29. One millionth of an ohm.






30. Meter used to measure resistance in an electrical circuit.






31. One millionth of a volt.






32. 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






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






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






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






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






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






38. One millionth of an ampere.






39. 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)






40. A cell which is composed of certain materials which are used up during the process of delivering electric current.






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






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






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






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






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






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






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






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






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






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