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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. Total and complete opposition to the flow of electrons






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

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






4. 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.






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






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






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






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






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






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






11. One millionth of a volt.






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






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






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






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






16. 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






17. A unit of power.






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






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






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






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






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






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






24. One- thousandth of a ampere






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






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






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






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






29. 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.






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






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






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






33. One millionth of an ampere.






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






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






36. Opposition to current flow






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






38. 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.






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






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






41. A coil of wire designed to act as a magnet as a result of carrying an electrical current. It is usually wound on a soft iron core.






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






43. 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.






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






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






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






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






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






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






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







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