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






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






3. A measuring device.






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






5. One millionth of an ampere.






6. One million ohms.






7. 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)






8. 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.






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. One millionth of an ohm.






11. The difference between the electrical condition of one point in an electric circuit and that of another point which tends to cause current to flow between two points. Measured in volts.






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






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






14. Term applied to the loss of voltage in forcing current through any portion of a circuit. Different factors will cause a drop; material - size - (cross - sectional area) length - temperature.






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






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






17. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.






18. 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.






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






20. The property of a material that opposes the flow of current.






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






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






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






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






25. One millionth of a volt.






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






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






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






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






30. Negative charge of electricity






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






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






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






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






35. An instrument for measuring electric current






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






37. 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.


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






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






40. Total and complete opposition to the flow of electrons






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






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


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






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






45. Several secondary cells connected together for either a greater voltage or current output.






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






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






48. 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.






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






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