Test your basic knowledge |

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. Meter used to measure resistance in an electrical circuit.






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






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.


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


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






6. One millionth of an ampere.






7. An alternating current which current cycle begins later that its voltage cycle.






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






9. The unit of Electro- Motive Force






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






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






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






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






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






15. One millionth of an ohm.






16. 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.






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






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






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






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






21. An instrument for measuring electric current






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






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






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






25. A unit of power.






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






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






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






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






30. The rotating member of an electrical machine.






31. 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






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






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






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






35. 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.






36. 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.






37. Rate of electrons flow (current flow). When one 'Coulomb' of electrons pass a given point in one second.






38. 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.






39. Total and complete opposition to the flow of electrons






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






41. One million ohms.






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






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






44. 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.






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






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






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






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


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






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