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. A rod or strip composed of two metals having different rates or coefficients of expansion. Upon being heated - it bends in a direction which causes the material with the greater rate of expansion to be on the outside.






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






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






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






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






6. A measuring device.






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






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






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






10. 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.






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






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






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






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






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






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






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






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






19. One millionth of a volt.






20. 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.






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






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






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






24. 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.






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






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






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






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






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






30. An instrument for measuring electric current






31. Negative charge of electricity






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






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






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






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






36. A unit of power.






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






38. One millionth of an ohm.






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






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






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






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






43. One- thousandth of volt.






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






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






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






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






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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


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






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