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






2. An instrument for measuring electric current






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






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






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






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






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






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






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






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






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






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






13. Negative charge of electricity






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






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






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






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






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






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






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






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






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






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

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


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






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






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






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






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






29. One millionth of an ohm.






30. 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.






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






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






33. A measuring device.






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






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






36. One million ohms.






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






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






39. Total and complete opposition to the flow of electrons






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






41. 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.






42. The rotating member of an electrical machine.






43. Opposition to current flow






44. 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.






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






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






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






48. 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.






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






50. The unit of Electro- Motive Force