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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. Meter used to measure resistance in an electrical circuit.






2. The unit of Electro- Motive Force






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






4. 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.






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






6. Negative charge of electricity






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






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






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






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






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

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






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






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






15. 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.






16. One millionth of an ohm.






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






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






19. A generator that produces alternating current.






20. Total and complete opposition to the flow of electrons






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






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






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

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






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






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






27. An instrument for measuring electric current






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






29. The space around a magnet in which the magnetic force is felt.






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






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






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






33. A unit of power.






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






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






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






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






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






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






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






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






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






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






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






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






47. One millionth of an ampere.






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






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






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







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