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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 unit of POWER. 1 kilowatt = 1 -000 watts






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






3. An instrument for measuring electric current






4. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.






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






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. 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.






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






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






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






11. 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






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






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






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






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






16. 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.






17. 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.






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






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






20. One- thousandth of a ampere






21. A measuring device.






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






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






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






25. Negative charge of electricity






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






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






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






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






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






31. 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.






32. The unit of electromotive force - potential - pressure - or voltage which produces a current of one ampere in a circuit having a resistance of 1 ohm. This is the force created to move electrons through a circuit.






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






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






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






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






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






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






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






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






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






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






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






44. 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.


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






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






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






49. A unit of power.






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