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






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






3. 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.






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






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






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






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






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






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






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






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






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






13. One millionth of an ohm.






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






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






16. 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.






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






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






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






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






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






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






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






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






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






26. One millionth of an ampere.






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






28. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)






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






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






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






32. Opposition to current flow






33. The rotating member of an electrical machine.






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






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






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






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






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

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39. 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.






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






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






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






43. One million ohms.






44. 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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45. 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)






46. A generator that produces alternating current.






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






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






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






50. Total and complete opposition to the flow of electrons