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






2. 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.






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






4. A tube - pipe or trough that carries and protects electric wiring.






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






6. The moving of electricity or heat through a conductor.






7. The difference in potential measured between two points caused by resistance or impedance.






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






9. ISO;






10. 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.






11. Very High Frequency.






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






13. The opposition to electrical flow.






14. Pounds per square inch absolute. Pressure commonly in reference to vacuum.






15. 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.






16. A device - instrument or component that will not produce any spark or thermal effects under any conditions that are normal or abnormal that will ignite a specified gas mixture. Electrical and thermal energy limits are at levels incapable of causing i






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






18. Intensity. The commonly used symbol used to represent Amperes when used in formulas. I = Intensity = Current = Amps = Amperes.






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






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






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






22. Volt-ohm Meter.






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






24. See; 'Proximity Sensor'.






25. 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.






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






27. The rate at which electricity flows - measured in amperes - 1 ampere = 1 coulomb per second.






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






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






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






31. The rate of transfer of energy.






32. The element inside a vacuum tube - incandescent lamp or other similar device.






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






34. FM; ~LINK~






35. Chemical changes and energy produced by electric currents.






36. MA; One thousandth of an amp.






37. Mm; One thousandth of a meter.






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






39. CSA ~LINK~






40. A unit of energy in solid-state physics with mass and momentum but that does not exist as a free particle.






41. A material used to conduct electricity or heat.






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






43. A highly accurate bridge configuration that is used to measure three-wire RTD thermometers.






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






45. A region of space that surrounds a moving electrical charge or a magnetic pole - in which the electrical charge or magnetic pole experiences a force that is above the electrostatic ones associated with particles at rest.






46. The interaction of magnetism and electrical current.






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






48. One millionth of an amp.






49. Radio Frequency Interference.






50. 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.