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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. Applying molecular physics to electronics.






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






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






4. One millionth of a meter.






5. 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.






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






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






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






9. Response to the change in the level of the input signal.






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






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






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






13. The time it takes for a controller to complete one on/off cycle.






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






15. The conductor that is used by intent to connect the grounded circuit of an electrical wiring system or equipment to a grounding electrode with reference to earth.






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






17. The average temperature of a process.






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






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






20. A unit of electric charge. The amount of charge conveyed in one second by one ampere.






21. 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(-).






22. A small current leaking from an output device in the off state caused by semiconductor characteristics.






23. 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.






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






25. Normally Closed.






26. Normally Open.






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






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






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






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






31. Silicone Controlled Rectifier.






32. ISA;






33. CSA ~LINK~






34. 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.






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






36. 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.






37. MV; One thousandth of a volt. The difference in potential needed to cause a current of one milliampere flow through a resistance of one ohm.






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






39. Very High Frequency.






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






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






42. OSHA;






43. (ampere)The basic unit of current in an electrical circuit. One ampere is the rate of flow of electric current when one coulomb of charge flows past a point in the circuit in one second. Symbolically characterized by the letter 'I' and sometimes 'A'






44. 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.






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






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






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






48. The increase of the power level - current or voltage of a signal. In an amplifier it is the ratio of the output to the input signal levels.






49. The opposition to electrical flow.






50. IEEE;







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