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






2. Very High Frequency.






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






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






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






6. Normally Closed.






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






8. Kwh; One thousand watt-hours.






9. CSA ~LINK~






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






11. Kw; One thousand watts.






12. The rapid on/off cycling of a relay caused by improper signal or adjustment - faulty contacts - or other malfunction.






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






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






15. 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.






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






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






18. Volt-ohm Meter.






19. Inspection - analysis and action required to ensure quality of output.






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






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






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






23. 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.






24. MA; One thousandth of an amp.






25. Normally Open.






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






27. An ionized gas containing about equal numbers of positive and negative charges - which is a good conductor of electricity - and is affected by a magnetic field.






28. Non-conducting material used to isolate and/or insulate energized electrical components.






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






30. Radio Frequency Interference.






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






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






33. 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.






34. Output power divided by input power - (work performed in ratio to energy used to produce it).






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






36. Chemical changes and energy produced by electric currents.






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






38. Mm; One thousandth of a meter.






39. The maximum watts that a device can safely handle.






40. The output that is produced when one or more inputs are present.






41. The unit of power. One watt equals one joule per second - 1/746th horsepower.






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






43. The standard unit of magnetic flux.






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






45. A sudden and unwanted increase or decrease of supply voltage or current.






46. A material used to conduct electricity or heat.






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






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






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






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