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






2. A panel meter with zero and span adjustments - commonly scaled for signals such as 1-5 volts - 4-20mA - etc.






3. Current Consumption. The amount of amps or milliamps needed to maintain operation of a control or device.






4. In a temperature controller it is the output form that provides a current proportional to the amount of control that is required. Commonly it is the 4 to 20 milliamp current proportioning band that is used in the electronics industry.






5. Volt-ohm Meter.






6. 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.






7. Two dissimilar metals connected at a point - that produce an electrical current whose magnitude is dependent upon the temperature at the junction point.






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






9. Radio Frequency Interference.






10. One thousandth of an inch.






11. 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.






12. 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






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






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






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






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






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






18. Pressure that is less than atmospheric pressure.






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






20. Kwh; One thousand watt-hours.






21. Applying molecular physics to electronics.






22. The average temperature of a process.






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






24. The standard unit of magnetic flux.






25. UL; ~LINK~






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






27. MA; One thousandth of an amp.






28. NFPA;






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






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






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






32. The speed or time rate of change of displacement.






33. An arrangement of any of various conductors through which electric current can flow from a supply current.






34. European environmental ratings. Similar to NEMA ratings in the USA. IP;*site has NEMA comparisons ~LINK~






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






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






37. The conductor that is used by intent to connect the grounded circuit of an electrical wiring system or equipment to a grounding electrode with reference to earth.






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






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






40. IEC;






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






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






43. The method by which two devices or systems are connected and interact with each other.






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






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






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






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






48. A variable resistor.






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






50. A full path of electrical current from a voltage source that passes completely from one terminal of the voltage source to another.