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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 two or more paths for the current to take.






2. A unit of power.






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






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






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






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






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






8. A complete sequence of events - as an alternating- current cycle.






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






10. The voltage dissipation between any two points in a circuit. The voltage 'dropped' or 'dissipated' in forcing current through a resistance.






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






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






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






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






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






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






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






18. One- thousandth of volt.






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






20. A measuring device.






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






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






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






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






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






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






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






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






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






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






33. 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.






34. 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.






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






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






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






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






39. An instrument for measuring electromotive force in volts. It must be connected across the load that causes the votage drop.






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






41. One millionth of an ampere.






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






43. 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.






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






45. One- thousandth of a ampere






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






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






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






49. A generator that produces alternating current.






50. One millionth of an ohm.