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






2. An interconnected arrangement of parts for carrying high-voltage electricity.






3. A form of control where the power supplied to a process is controlled by limiting the phase angle of the line voltage.






4. ISA;






5. 'Common Mode Voltage.' The voltage which is tolerable between signal and ground.






6. A switching device used in switching high DC loads. It contains a small permanent magnet which deflects arc in order to quench it.






7. A variable resistor.






8. Silicone Controlled Rectifier.






9. Symbol used to denote transmitter.






10. NFPA;






11. 'American Wire Gauge' system used to determine wire size.






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






13. A device used to store electrical energy in an electrostatic field until discharge.






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






15. FM; ~LINK~






16. A meter used to measure units of volts.






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






18. Ultra High Frequency






19. See; 'Maximum Power Rating'.






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






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






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






23. ISO;






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






25. The element inside a vacuum tube - incandescent lamp or other similar device.






26. UL; ~LINK~






27. Variable Frequency.






28. The time delay between the output signal and the response time of the receiver of the signal.






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






30. A hypothetical nuclear of a quark plus an antiproton.






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






32. A highly accurate bridge configuration that is used to measure three-wire RTD thermometers.






33. IBEW;






34. The current that is gained by a transistor when it is connected in a common emitter circuit.






35. Symbol used to denote transformer.






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






37. 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.






38. Intensity. The commonly used symbol used to represent Amperes when used in formulas. I = Intensity = Current = Amps = Amperes.






39. A sensor or switch with the ability to detect it's relationship to a metal target without making physical contact.






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






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






42. NEC: A set of regulations pertaining to electrical installation and design in the interest of the protection of life and property. The NEC is adopted by NFPA and approved by ANSI. It is the preferred standard of guidelines used by most electrical reg






43. Kva; One thousand volt amps.






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






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






46. IEEE;






47. kV; One thousand volts.






48. A circuit which may have one or many resistors and/or other various devices connected in a series so that the current has only one path to follow.






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






50. RMS; AC voltage that equals DC voltage that will do the same amount of work. For an AC sine wave it is 0.707 x peak voltage.