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






2. One- thousandth of a ampere






3. A unit of power.






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






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






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






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






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






9. 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.






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






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






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






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






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






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






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






17. A complete path provided for the flow of electrons. Consists of a source - with a closed conducting path leading from the source and back to the source






18. 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.






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






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






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






22. 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.






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






24. One millionth of an ohm.






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






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






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






28. 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.

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






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






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






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






33. Total and complete opposition to the flow of electrons






34. One million ohms.






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






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






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






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






39. The center portion of an atom which has a positive electrical charge.






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






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






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






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






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






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

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47. 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.






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






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






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