Test your basic knowledge |

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






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






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






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






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






6. A generator that produces alternating current.






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






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






9. (EMF) The force created by an electric generator (or by other means) which causes current to flow. (Same as Voltage - Volts - Electric Potential - Pressure).






10. A measuring device.






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






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






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






14. The unit of electromotive force - potential - pressure - or voltage which produces a current of one ampere in a circuit having a resistance of 1 ohm. This is the force created to move electrons through a circuit.






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






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






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






18. An instrument for measuring electric current






19. 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.






20. One million ohms.






21. 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.






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






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






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






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






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






27. 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.






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






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






30. 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)






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






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






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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


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






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






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






37. The rotating member of an electrical machine.






38. One millionth of an ohm.






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






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






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






42. Opposition to current flow






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






44. Total and complete opposition to the flow of electrons






45. The liquid solution (sometime a paste) in which the electrodes are placed.






46. 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.






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






48. One- thousandth of volt.






49. A unit of power.






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