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






2. An instrument for measuring electric current






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






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






6. 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.






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






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






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






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






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






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






13. One- thousandth of volt.






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






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






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






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






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






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






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






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






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






23. Opposition to current flow






24. One millionth of an ampere.






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






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






27. One millionth of an ohm.






28. 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.






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






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






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






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






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






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






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






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






37. One- thousandth of a ampere






38. 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.






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






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






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






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






43. 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.






44. 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.






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






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






47. Negative charge of electricity






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






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






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