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






2. Symbol for Mega - one million.






3. The part of a circuit that supplies power to the entire circuit or part of the circuit. Usually a separate unit that supplies power to a specific part of the circuit in a system.






4. The rate of transfer of energy.






5. Symbol used for wye configuration for three phase electrical connections.






6. Symbol used to denote transformer.






7. A variable resistor.






8. The unit for capacitance. A capacitor that stored one coulomb of charge with one volt across it will have a value of one farad.






9. That part of a circuit which is physically interconnected.






10. A device having two terminals and has a low resistance to electrical current in one direction and a high resistance in the other direction.






11. 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(-).






12. The output that is produced when one or more inputs are present.






13. LED; A solid state light source component that emits light or invisible infrared radiation.






14. IEC;






15. A negative (-) electrode. The point of entry of electrons into a device from an external circuit. The negative electrode of a semiconductor diode.






16. FM; ~LINK~






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






18. A high-intensity incandescent lamp with a quartz bulb containing an inert gas of iodine or bromine vapor.






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






20. Very High Frequency.






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






22. Mm; One thousandth of a meter.






23. Resistance Temperature Detector.






24. Normally Closed.






25. The interaction of magnetism and electrical current.






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






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






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






29. An anode (+) or cathode (-) conductor on a device through which an electric current passes.






30. A panel meter with zero and span adjustments - commonly scaled for signals such as 1-5 volts - 4-20mA - etc.






31. The pronounced curvature in reverse voltage current that is characteristic of a diode.






32. The rate at which electricity flows - measured in amperes - 1 ampere = 1 coulomb per second.






33. European environmental ratings. Similar to NEMA ratings in the USA. IP;*site has NEMA comparisons ~LINK~






34. Silicone Controlled Rectifier.






35. kV; One thousand volts.






36. The form of radiation used to make non-contact temperature measurements. In the electromagnetic spectrum it is the area beyond red light from 760 nanometers to 1000 microns.






37. Volt-ohm Meter.






38. A meter used to measure electrical resistance in units of ohms.






39. Pressure that is less than atmospheric pressure.






40. Inspection - analysis and action required to ensure quality of output.






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






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






43. A solid-state switching device used in switching AC wave forms.






44. Or Hertz; The measurement of the time period of one alternating electric current. In the United States this is commonly 60 cycles per second - or 60 Hertz.






45. The amount of heat needed to convert one pound of water to one pound of steam. Latent heat is expressed in BTU per pound.






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






47. The opposition to electrical flow.






48. A silicone semiconductor that maintains a fixed voltage in a circuit.






49. A temperature scale. Also known as centigrade. Sea level water will freeze at 0






50. ANSI;