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 behavior of charged particles and the steady motion of charge in magnetic and electric fields.






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






3. Pressure that is less than atmospheric pressure.






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






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






6. A meter used to measure units of volts.






7. Radio Frequency Interference.






8. A silicone semiconductor that maintains a fixed voltage in a circuit.






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






10. A negative (-) electrode. The point of entry of electrons into a device from an external circuit. The negative electrode of a semiconductor diode.






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






12. 'British Thermal Unit' - the amount of thermal energy required to raise one pound of water 1degree F. One BTU is equal to .293 watt hours. One kWh is equal to 3412 BTUs.






13. The pronounced curvature in reverse voltage current that is characteristic of a diode.






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






15. One millionth of a volt.






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






17. The moving of electricity or heat through a conductor.






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






19. NFPA;






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






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






22. 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.






23. One millionth of a meter.






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






25. A variable resistor.






26. Kwh; One thousand watt-hours.






27. Silicone Controlled Rectifier.






28. The voltage that is applied across a semiconductor junction to permit forward current through that junction and the device. Forward voltage is also known as 'bias.'






29. The modification of a signal that causes the output to remain energized until it is released by intent.






30. NEC: A set of regulations pertaining to electrical installation and design in the interest of the protection of life and property. The NEC is adopted by NFPA and approved by ANSI. It is the preferred standard of guidelines used by most electrical reg






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






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






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






34. SI; The standard metric system of units.






35. Or Hertz; The measurement of the time period of one alternating electric current. In the United States this is commonly 60 cycles per second - or 60 Hertz.






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






37. Volt-ohm Meter.






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






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






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






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






42. Kw; One thousand watts.






43. A three terminal semiconductor device. In a 'FET' the current is from source to drain because a conducting channel is formed by a voltage field between the gate and the source.






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






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






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






47. 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






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






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






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