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. A material used to conduct electricity or heat.






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






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






4. The output that is produced when one or more inputs are present.






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






6. Resistance Temperature Detector.






7. A variable resistor.






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






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






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






11. Symbol used to denote transmitter.






12. 'British Thermal Unit' - the amount of thermal energy required to raise one pound of water 1degree F. One BTU is equal to .293 watt hours. One kWh is equal to 3412 BTUs.






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






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






15. Protective circuitry to guard against spikes that might be induced on the supply line.






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






17. Variable Frequency.






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






19. The magnitude and time phase of a quantity - represented by a plotted line.






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






21. A high-intensity incandescent lamp with a quartz bulb containing an inert gas of iodine or bromine vapor.






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






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






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






25. IEC;






26. The current that is gained by a transistor when it is connected in a common emitter circuit.






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






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






29. Silicone Controlled Rectifier.






30. Non-conducting material used to isolate and/or insulate energized electrical components.






31. Normally Open.






32. 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.






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






34. Electrical energy produced by the action of heat.






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






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






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






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






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






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






41. FM; ~LINK~






42. Radio Frequency Interference.






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






44. The mechanism of a switch which operates the contacts.






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






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






47. Magnetically - opposite poles - north and south. In electricity - oppositely charged poles - positive and negative.






48. Volt-ohm Meter.






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






50. A negative (-) electrode. The point of entry of electrons into a device from an external circuit. The negative electrode of a semiconductor diode.