Test your basic knowledge |

Basic Of Electricity 3

Subject : engineering
Instructions:
  • Answer 42 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. Galvanic current






2. Metals used in electric wiring and motors are materials that are considered good electricity:






3. Prevents current from overload or excessive overload of circuit






4. Visible light - the part of the electromagnetic radiation spectrum that we can see - makes up what percentage of natural sunlight ?






5. Electric current that is constant - even - flowing and travels in one direction is:






6. The negative electrode of an electrotherapy device is called a (n)






7. The path of electricity from the generating source through conductors and back to the original source is called a(n)






8. Is a thermal or heat - producing current with a high rate of oscillation or vibration






9. Produces moist - uniform heat that can be appiled to the head or face






10. Indicates the negative or positive pole of an electric current






11. Makes up 5% of natural sunlight






12. Uv rays are applied with a lamp at a distance of






13. To avoid damage to the eyes of a client or practitioner when using light therapy treatments - the eyes should be protected with saturated cotton pads or:






14. A process that forces liquids into the tissuse from the negative toward the positive pole is called:






15. The unit that measures the pressure or force that pushes the flow of electrons through a conductor is a (n)






16. The distance between two successive peaks is called the






17. The unit that measures the amount of electric current is a(n)






18. A switch that automatically interrupts or shuts off an electric current at the first indication of an overload is a (n)






19. An applicator that is used for directing the electric current from the machine to the clients skin is called a (n)






20. A rapid and interrupted current that flows in one direction then in the opposite direction is :






21. Amp






22. The positive electrode of an electrotherapy device is called a (n):






23. Tesla high frequency current should not be used on clients who pregnant - suffer from epilepsy or asthma - high blood pressure - sinus blockage - pacemaker or metal implants






24. The device that prevents excessive current from passing through a circuit is a (n)






25. The long wavelenghts that penetrate the deepest and produce the most heat are:






26. An important way of promoting electrical safety is the principle of:






27. Tesla high- frequency current It is commonly called






28. A thermal or heat- producing current with a high rate of oscillation that is used for scalp and facial treatments is :






29. Is a unit that measures the resistance of an electric current






30. The process of forcing water- soluble products into the skin with the use of electric current is called :






31. The flow of electricity along a conductor is called a(n)






32. The current that is used for facial and scalp treatments is measured in :






33. Is process used to soften and emulsify grease deposits (oil) and blackheads in the hair follicles.






34. Electric wires are usually covered with a rubber substance that is used as an insulator or:






35. Meaning Alternating Current






36. The device that changes direct current to alternating current is a(n)






37. Electricity is described as a form of:






38. The most commonly used modality that is a constant and direct current is:






39. Ultraviolet (UV) rays are also referred to as






40. Is a measurement of how much electric energy is being used in one second






41. The unit that measures how much electric energy is being used in one second is a (n)






42. Forces acidic substances into deeper tissue using galvanic current from the positive toward the negative pole