Test your basic knowledge |

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. Expressed in webers - it is the product of the average normal component of the magnetic intensity over a surface and the area of that surface.






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






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






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






6. 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






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






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. One millionth of a meter.






10. IBEW;






11. Kwh; One thousand watt-hours.






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






13. A switch with contacts that are made with actuating force and released when that force is removed.






14. A process that is kept at a constant temperature.






15. A variable resistor.






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






17. Symbol for Mega - one million.






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






19. A coil of wire wound about a magnetic material - such as iron - that produces a magnetic field when current flows through the wire.






20. One millionth of an amp.






21. Voltage; The unit of electromotive force (EMF) that causes current to flow. One volt causes a current of one amp through a resistance of one ohm.






22. 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.






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






24. 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.






25. 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.






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






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






28. 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.






29. See; 'Proximity Sensor'.






30. The interaction of magnetism and electrical current.






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






32. The average temperature of a process.






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






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






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






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






37. A device that transfers power or energy from one system to another - such as taking a physical quality and changing it to an electrical signal.






38. The measure of the ability of a material or substance to carry electrical current.






39. Electric and magnetic force field that surrounds a moving electric charge.






40. An interconnected arrangement of parts for carrying high-voltage electricity.






41. 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(-).






42. A circuit conductor that is grounded to become part of the electric circuit by design and intent.






43. The standard unit of magnetic flux.






44. CSA ~LINK~






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






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






47. 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.






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






49. 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.






50. 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