Test your basic knowledge |

Electrical Components

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. (AC); Electrical current that changes (or alternates) in magnitude and direction of the current at regular intervals.






2. To close an electrical circuit. To establish an electrical circuit through the closing of a contact - switch or other related device.






3. Pounds per square inch gage. Pressure in relationship to the ambient air pressure>






4. A form of silicone dioxide. Commonly used in the making of radio transmitters and heat resistant products.






5. See; 'Maximum Power Rating'.






6. A device that converts AC voltage to pulsating DC voltage.






7. A solid-state switching device for semiconductors to convert AC current in one of two directions controlled by an electrode.






8. Electrical energy produced by the action of heat.






9. NEMA;






10. Protective circuitry to guard against spikes that might be induced on the supply line.






11. The standard that is used to make comparison measurements or calibrations.






12. The act of the opening of an electrical circuit.






13. A hypothetical basic subatomic nuclear particle believed to be the basic component of protons - neutrons - etc.






14. A connected path to earth or to a conductive body that has a reference potential to earth.






15. The measured amount of electrical energy that represents the electrostatic forces between atomic particles. The nucleus of an atom has a positive charge (+) and the electrons have a negative charge(-).






16. A fluctuation in the intensity of a steady current.






17. EPA; ~LINK~






18. One millionth of an amp.






19. Output power divided by input power - (work performed in ratio to energy used to produce it).






20. An arrangement of any of various conductors through which electric current can flow from a supply current.






21. The behavior of charged particles and the steady motion of charge in magnetic and electric fields.






22. ANSI;






23. A process that is kept at a constant temperature.






24. One millionth of a meter.






25. CSA ~LINK~






26. Ultra High Frequency






27. The time based relationship between a reference and a periodic function.






28. An electromagnetic radiation produced when the inner satellite electrons of heavy atoms have been excited by collision with a stream of fast electrons return to their ground state - giving up the energy previously imparted to them.






29. OSHA;






30. Very High Frequency.






31. Pounds per square inch differential. The difference in pressure between two points.






32. MV; One thousandth of a volt. The difference in potential needed to cause a current of one milliampere flow through a resistance of one ohm.






33. A switch with contacts that are made with actuating force and released when that force is removed.






34. The measure of the ability of a material or substance to carry electrical current.






35. The interaction of magnetism and electrical current.






36. A fundamental negatively (-) charged atomic particle that rotates around a positively (+) charged nucleus of the atom.






37. Normally Open.






38. The unit by which electrical resistance is measured. One ohm is equal to the current of one ampere which will flow when a voltage of one volt is applied






39. A meter used to measure units of volts.






40. When there is current through a semiconductor p-n junction it is the resistance of a forward-biased junction.






41. Non-conducting material used to isolate and/or insulate energized electrical components.






42. One of the very small discrete packets into which many forms of energy are subdivided.






43. Magnetically - opposite poles - north and south. In electricity - oppositely charged poles - positive and negative.






44. A form of energy produced by the flow of particles of matter and consists of commonly attractive positively (protons [+]) and negatively (electrons [-]) charged atomic particles. A stream of electrons - or an electric current.






45. An electrical resistor composed of semiconductor material - whose resistance is a known rapidly varying function of temperature.






46. An area in which combustible or flammable mixtures are or could be present.






47. The basic of thermal energy. The work done by the force of one newton acting through a distance of one meter.






48. Radio Frequency Interference.






49. The method by which two devices or systems are connected and interact with each other.






50. A sudden and unwanted increase or decrease of supply voltage or current.