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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- thousandth of a ampere






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






4. Total and complete opposition to the flow of electrons






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






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






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






8. 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.






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






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






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






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






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






14. Opposition to current flow






15. A measuring device.






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






17. 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.






18. 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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19. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.






20. One millionth of an ohm.






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






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






23. Lines representing the direction of the magnetic force in a magnetic field.






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






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






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






27. 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.






28. Rate of electrons flow (current flow). When one 'Coulomb' of electrons pass a given point in one second.






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






30. One millionth of an ampere.






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






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






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






34. One- thousandth of volt.






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






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






37. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.






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






39. A unit of power.






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






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






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






43. 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)






44. The unit of Electro- Motive Force






45. A generator that produces alternating current.






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






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






48. One million ohms.






49. 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.






50. 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.