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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 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.






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






3. A variable resistor.






4. Pressure that is less than atmospheric pressure.






5. 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.'






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






7. See; 'Proximity Sensor'.






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






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






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






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






12. ISA;






13. An electrical circuit that increases the power - voltage or current of an applied signal.






14. A positive (+) electrode. The point where electrons exit from a device to the external electric circuit.






15. A connected path to earth or to a conductive body that has a reference potential to earth.






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






17. NFPA;






18. An area in which combustible or flammable mixtures are or could be present.






19. One millionth of a volt.






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






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






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






23. The standard unit of magnetic flux.






24. Variable Frequency.






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






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






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






28. 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.






29. A switch in a controller that manually resets after exceeding the controllers limit.






30. The opposition to electrical flow.






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






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






33. The amount of time it takes for a device to react to an input signal.






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






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






36. Silicone Controlled Rectifier.






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. A meter used to measure units of volts.






39. A controller whose action is either fully on or off.






40. NEMA;






41. An anode (+) or cathode (-) conductor on a device through which an electric current passes.






42. The electrical demand of a process. Load can be expressed or calculated as amps (current) - ohms (resistance) or watts (power).






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






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






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






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






47. Symbol for Mega - one million.






48. 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






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






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






Can you answer 50 questions in 15 minutes?



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