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






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






3. A rise and fall of voltage - current - or other faction that would be constant under normal conditions. A pulse that is intentionally induced will have a finite duration time.






4. kV; One thousand volts.






5. The part of a circuit that supplies power to the entire circuit or part of the circuit. Usually a separate unit that supplies power to a specific part of the circuit in a system.






6. SI; The standard metric system of units.






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






8. The amount of energy released in a nuclear reaction. It is expressed in atomic mass units - or in million electron volts (MEV).






9. The maximum temperature at which a device can be safely operated.






10. IEEE;






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






12. ISO;






13. A form of control where the power supplied to a process is controlled by limiting the phase angle of the line voltage.






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






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






16. UL; ~LINK~






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






18. Commonly used in generators and motors - it is an electromagnet formed from a coil of insulated wire that is wound around a soft iron core.






19. Very High Frequency.






20. See; 'Proximity Sensor'.






21. A fluctuation in the intensity of a steady current.






22. Volt-ohm Meter.






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






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






25. The rate of transfer of energy.






26. 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






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






28. 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.






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






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






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






32. One millionth of a volt.






33. A form of silicone dioxide. Commonly used in the making of radio transmitters and heat resistant products.






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






35. IBEW;






36. 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(-).






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






38. The resistance to electrical current. Resistance is measured in ohms.






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






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






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






42. 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.






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






44. 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.






45. -459.67






46. A unit of energy in solid-state physics with mass and momentum but that does not exist as a free particle.






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






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






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






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