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






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






3. One- thousandth of volt.






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






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






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






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






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






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






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






11. 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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12. 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.






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






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






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






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






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






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






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






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






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






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






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






24. 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)






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






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






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






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






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






30. A unit of power.






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






32. One millionth of a volt.






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






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






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






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






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






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






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






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






42. Opposition to current flow






43. The space around a magnet in which the magnetic force is felt.






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






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






46. 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.






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






48. A generator that produces alternating current.






49. Total and complete opposition to the flow of electrons






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