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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. The unit of Electro- Motive Force






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






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






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






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






6. One- thousandth of volt.






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






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






9. A generator that produces alternating current.






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






11. Total and complete opposition to the flow of electrons






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






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






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






15. 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)






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






17. An instrument for measuring electric current






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






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






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






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






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






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






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






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






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






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






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






29. 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.






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

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






32. 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.






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






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






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






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






37. Opposition to current flow






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






39. 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.






40. One- thousandth of a ampere






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






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






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






44. A unit of power.






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






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






47. The difference between the electrical condition of one point in an electric circuit and that of another point which tends to cause current to flow between two points. Measured in volts.






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






49. 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.






50. 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.







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