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






2. 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.






3. Also known as Hertz - it is the number of complete cycles of periodic waveform that occur during a time period of one second.






4. Chemical changes and energy produced by electric currents.






5. The opposition to electrical flow.






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






7. (DC); Electrical current that flows consistently in one direction only.






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






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






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






11. Variable Frequency.






12. NEMA;






13. IBEW;






14. The magnitude and time phase of a quantity - represented by a plotted line.






15. The voltage that is applied across a semiconductor junction to permit forward current through that junction and the device. Forward voltage is also known as 'bias.'






16. One millionth of a meter.






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






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






19. The power of one watt operating for one hour - and equal to 3 -600 joules.






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






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






22. ANSI;






23. Two dissimilar metals connected at a point - that produce an electrical current whose magnitude is dependent upon the temperature at the junction point.






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






25. kV; One thousand volts.






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






27. Electrical energy produced by the action of heat.






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






29. Silicone Controlled Rectifier.






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






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






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






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






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






35. CSA ~LINK~






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






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






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






39. Symbol used to denote transmitter.






40. ISA;






41. Normally Closed.






42. The unit of power. One watt equals one joule per second - 1/746th horsepower.






43. The quality of having the ability to emit light when struck by electrons or another form of radiation.






44. A reference point at zero potential with respect to the earth. In an electronic circuit it is the common return path for electric current. A conducting connection between the earth and an electrical circuit or electrical equipment. Also - the negativ






45. Electric current passing through an electrolyte which produces chemical changes in it.






46. 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.






47. A Solid State relay is a switching device that completes or interrupts a circuit electrically and has no moving parts. A Mechanical relay is an electromechanical device that closes contacts to complete a circuit or opens contacts to interrupt a circu






48. A three mode control consisting of time Proportioning - Integral and Derivative rate action.






49. Kwh; One thousand watt-hours.






50. Commonly used in generators and motors - it is an electromagnet formed from a coil of insulated wire that is wound around a soft iron core.







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