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






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






3. 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)






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






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






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






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






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






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


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






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






12. That property of a material which determines how readily it conducts magnetic lines of flux. Opposite magnetic quality or conductivity.






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






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






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


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






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






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






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






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






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






22. 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.






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






24. 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.






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






26. 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.






27. One- thousandth of a ampere






28. Opposition to current flow






29. One millionth of an ohm.






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






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






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






33. The opposite ends of a magnet where the magnetism is concentrated. Each magnet has two poles - designated as north and south.






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






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






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






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






38. 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.






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






40. One- thousandth of volt.






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






42. A measuring device.






43. The unit of Electro- Motive Force






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






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






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






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






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






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






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