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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. One million ohms.






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

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3. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.






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






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






6. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.






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






8. 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.






9. 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.






10. One millionth of an ampere.






11. One- thousandth of a ampere






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






13. Total and complete opposition to the flow of electrons






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






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






16. A unit of power.






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






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






19. Negative charge of electricity






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.

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






22. 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.






23. The rotating member of an electrical machine.






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






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






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






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

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28. A measuring device.






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






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






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






32. 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






33. A generator that produces alternating current.






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






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






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






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






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






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






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






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






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






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






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






45. One- thousandth of volt.






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






47. Opposition to current flow






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






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






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