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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. Current Consumption. The amount of amps or milliamps needed to maintain operation of a control or device.






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






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






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






5. In a temperature controller it is the output form that provides a current proportional to the amount of control that is required. Commonly it is the 4 to 20 milliamp current proportioning band that is used in the electronics industry.






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






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






8. The amount of power that is consumed and converted to heat.






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






10. 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






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






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






13. NEMA;






14. The amount of energy released in a nuclear reaction. It is expressed in atomic mass units - or in million electron volts (MEV).






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






16. A circuit element or components that allows signals of certain frequencies to pass and blocks signals of other frequencies.






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






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






19. An ionized gas containing about equal numbers of positive and negative charges - which is a good conductor of electricity - and is affected by a magnetic field.






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






21. OSHA;






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






23. A variable resistor.






24. The energy delivered by a circuit or device. The electrical signal produced by the input to the transducer.






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






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






27. A unit of electrical current named after French physicist Andr






28. The adjustment of a display that results are zero on the display corresponding to a non-zero signal.






29. Kw; One thousand watts.






30. ISO;






31. Normally Open.






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






33. 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.






34. The standard unit of magnetic flux.






35. IBEW;






36. A unit of energy in solid-state physics with mass and momentum but that does not exist as a free particle.






37. Volt-ohm Meter.






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






39. In a three phase connection all three phases are connected in series thus forming a closed circuit.






40. The maximum watts that a device can safely handle.






41. One millionth of a meter.






42. Resistance Temperature Detector.






43. 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.






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






45. SI; The standard metric system of units.






46. The difference in potential measured between two points caused by resistance or impedance.






47. 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






48. Silicone Controlled Rectifier.






49. Normally Closed.






50. The rapid on/off cycling of a relay caused by improper signal or adjustment - faulty contacts - or other malfunction.







Sorry!:) No result found.

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