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. See; 'Maximum Power Rating'.






2. In a three phase connection all three phases are connected in series thus forming a closed circuit.






3. One of the very small discrete packets into which many forms of energy are subdivided.






4. ANSI;






5. EPA; ~LINK~






6. The delayed period of time when outputs are turned off when power is initially applied.






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






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






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






10. '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.






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






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






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






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






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






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






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






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






19. The opposition to electrical flow.






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






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






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






23. A device incorporating semiconductor material and suitable contacts capable of performing electrical functions (such as voltage - current or power amplification) with low power requirements.






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






25. A variable resistor.






26. Symbol used for wye configuration for three phase electrical connections.






27. The interaction of magnetism and electrical current.






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






29. 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.






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






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






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






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






34. LED; A solid state light source component that emits light or invisible infrared radiation.






35. A unit of electrical current named after French physicist Andr






36. The form of radiation used to make non-contact temperature measurements. In the electromagnetic spectrum it is the area beyond red light from 760 nanometers to 1000 microns.






37. An electrical circuit that is not 'made'. Contacts - switches or similar devices are open and preventing the floe of current.






38. 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.






39. Silicone Controlled Rectifier.






40. Very High Frequency.






41. A solid-state switching device for semiconductors to convert AC current in one of two directions controlled by an electrode.






42. 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.






43. IEEE;






44. Kwh; One thousand watt-hours.






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






46. Variable Frequency.






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






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






49. That part of a circuit which is physically interconnected.






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