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






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






3. 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






4. 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.






5. 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.






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






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






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






9. Ultra High Frequency






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






11. MV; One thousandth of a volt. The difference in potential needed to cause a current of one milliampere flow through a resistance of one ohm.






12. 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.






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






14. IEEE;






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






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






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






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






19. One thousandth of an inch.






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






21. EPA; ~LINK~






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






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






24. 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.






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






26. CSA ~LINK~






27. A solid-state switching device used in switching AC wave forms.






28. The average temperature of a process.






29. FM; ~LINK~






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






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






32. 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(-).






33. The increase of the power level - current or voltage of a signal. In an amplifier it is the ratio of the output to the input signal levels.






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






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






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






37. A switch in a controller that manually resets after exceeding the controllers limit.






38. A device - instrument or component that will not produce any spark or thermal effects under any conditions that are normal or abnormal that will ignite a specified gas mixture. Electrical and thermal energy limits are at levels incapable of causing i






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






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






41. An area in which combustible or flammable mixtures are or could be present.






42. 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.






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






44. Kva; One thousand volt amps.






45. Normally Open.






46. Applying molecular physics to electronics.






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






48. The standard unit of magnetic flux.






49. A tube - pipe or trough that carries and protects electric wiring.






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