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






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






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






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






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






6. A measuring device.






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






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

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






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






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






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






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






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






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






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






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






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






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






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






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






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






23. Negative charge of electricity






24. 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.






25. One million ohms.






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






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






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






29. An instrument for measuring electric current






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






31. One- thousandth of volt.






32. The unit of resistance. It is the resistance through which a voltage of 1 volt will produce a current of 1 ampere.






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






34. 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.






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






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






37. 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.






38. One millionth of an ohm.






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






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






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






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






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

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






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






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






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






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






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






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