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






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






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






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






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






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






7. One millionth of an ampere.






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






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






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






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






12. 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






13. 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.






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






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






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






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






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






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






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






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






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






23. 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.






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






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






26. One millionth of a volt.






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






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






29. Total and complete opposition to the flow of electrons






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






31. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.






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






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






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






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






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






37. 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.






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






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






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






41. A generator that produces alternating current.






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






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






44. The rotating member of an electrical machine.






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






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






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

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49. Any device which may be placed in the circuit and which offers opposition to the flow of electrons around the circuit.






50. 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.