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






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






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






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






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






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






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






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






9. An instrument for measuring electric current






10. One- thousandth of volt.






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






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






13. One millionth of a volt.






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






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






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






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






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






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






20. 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.


21. Opposition to current flow






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






23. Negative charge of electricity






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






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






26. 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.






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






28. The unit of Electro- Motive Force






29. 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)






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






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






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






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






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






35. One- thousandth of a ampere






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






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






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






39. 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.






40. A unit of power.






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






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






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






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


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






46. 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.






47. One millionth of an ohm.






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






49. 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.






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