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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 standard that is used to make comparison measurements or calibrations.






2. A variable resistor.






3. Radio Frequency Interference.






4. CSA ~LINK~






5. The delayed period of time when outputs are turned off when power is initially applied.






6. A rise and fall of voltage - current - or other faction that would be constant under normal conditions. A pulse that is intentionally induced will have a finite duration time.






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






8. 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.






9. 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(-).






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






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






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






13. 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






14. The range of temperature over which a device may be safely used. The temperature range which the device has been designed to operate.






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






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






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






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






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






20. Variable Frequency.






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






22. A full path of electrical current from a voltage source that passes completely from one terminal of the voltage source to another.






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






24. NFPA;






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






26. Kva; One thousand volt amps.






27. 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.






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






29. Symbol used to denote transformer.






30. The maximum temperature at which a device can be safely operated.






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






32. IEC;






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






34. An electrically conductive fused salt or a solution where the charge is carried by ionic movement.






35. ISA;






36. A three terminal semiconductor device. In a 'FET' the current is from source to drain because a conducting channel is formed by a voltage field between the gate and the source.






37. A full-wave rectifier where the diodes are connected in a bridge circuit. This allows the current to the load during both the positive and negative alternating of the supply voltage.






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






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






40. ISO;






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






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






43. 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.






44. MLS; A photoelectric control that operates on pulsed infrared radiation at a specific frequency - and responds only to that frequency of pulse. MLS is used frequently in areas where ambient light may cause problems with other types of sensors.






45. One millionth of an amp.






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






47. IBEW;






48. The modification of a signal that causes the output to remain energized until it is released by intent.






49. Chemical changes and energy produced by electric currents.






50. A variable resistor.






Can you answer 50 questions in 15 minutes?



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