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






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






3. Opposition to current flow






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






5. Total and complete opposition to the flow of electrons






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






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






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






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






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






11. One- thousandth of volt.






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






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






14. One- thousandth of a ampere






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






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






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






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






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






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






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






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






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






24. A generator that produces alternating current.






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






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






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






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






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






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






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






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






33. 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.






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






35. 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.






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






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






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






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






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






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






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






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

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44. 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.






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






46. One millionth of an ohm.






47. Negative charge of electricity






48. The unit of Electro- Motive Force






49. One millionth of a volt.






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