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






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






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






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

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5. An instrument for measuring electric current






6. 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.






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






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






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






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






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






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






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






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






15. 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






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






17. In an electrical circuit - or part of an electric circuit - the intensity of the current is equal to the electromotive force that drives it divided by the resistance of the circuit.

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






19. The unit of Electro- Motive Force






20. One- thousandth of volt.






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






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






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






24. One million ohms.






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






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






27. One millionth of an ampere.






28. 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.






29. 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.






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






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






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






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






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






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






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






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






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






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

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






41. A unit of power.






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






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






44. 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)






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






46. One millionth of a volt.






47. The rotating member of an electrical machine.






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






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






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






Can you answer 50 questions in 15 minutes?



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