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. ISO;






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






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






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






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






6. 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.






7. A material used to conduct electricity or heat.






8. A Solid State relay is a switching device that completes or interrupts a circuit electrically and has no moving parts. A Mechanical relay is an electromechanical device that closes contacts to complete a circuit or opens contacts to interrupt a circu






9. IEC;






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






11. MA; One thousandth of an amp.






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






13. Electric current passing through an electrolyte which produces chemical changes in it.






14. A switching device used in switching high DC loads. It contains a small permanent magnet which deflects arc in order to quench it.






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






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






17. IBEW;






18. Ultra High Frequency






19. Very High Frequency.






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






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






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






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






24. 'Common Mode Voltage.' The voltage which is tolerable between signal and ground.






25. kV; One thousand volts.






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






27. The rate of transfer of energy.






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






29. One millionth of an amp.






30. Pressure that is less than atmospheric pressure.






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






32. The basic of thermal energy. The work done by the force of one newton acting through a distance of one meter.






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






34. Kva; One thousand volt amps.






35. Pounds per square inch gage. Pressure in relationship to the ambient air pressure>






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






37. 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






38. Kwh; One thousand watt-hours.






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






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






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






42. IEEE;






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






44. 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.






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






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






47. 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.






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






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






50. EPA; ~LINK~