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






2. The time delay between the output signal and the response time of the receiver of the signal.






3. A variable resistor.






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






5. The opposition to electrical flow.






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






7. One millionth of a meter.






8. The standard unit of magnetic flux.






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






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






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






13. One thousandth of an inch.






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






15. CSA ~LINK~






16. Resistance Temperature Detector.






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






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






19. The power of one watt operating for one hour - and equal to 3 -600 joules.






20. A meter used to measure units of volts.






21. The act of the opening of an electrical circuit.






22. The unit by which electrical resistance is measured. One ohm is equal to the current of one ampere which will flow when a voltage of one volt is applied






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






24. See; 'Proximity Sensor'.






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






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






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






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






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






30. Symbol used to denote transformer.






31. Normally Closed.






32. 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.






33. 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.






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






35. 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(-).






36. Symbol used to denote transmitter.






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






38. A small current leaking from an output device in the off state caused by semiconductor characteristics.






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






40. The range of voltage needed to maintain operation of a control or device.






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






42. NEMA;






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






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






45. Kwh; One thousand watt-hours.






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






47. 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.






48. A device that converts AC voltage to pulsating DC voltage.






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






50. 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