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. Resistance Temperature Detector.






2. A variable resistor.






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






4. Very High Frequency.






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






6. The standard unit of magnetic flux.






7. Symbol used to denote transmitter.






8. A circuit conductor that is grounded to become part of the electric circuit by design and intent.






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






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






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






12. One thousandth of an inch.






13. IEC;






14. 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.






15. 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.






16. See; 'Maximum Power Rating'.






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






18. 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.






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






20. A connected path to earth or to a conductive body that has a reference potential to earth.






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






22. A variable resistor.






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






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






25. 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.






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






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






28. 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.






29. 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






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






31. The power of one watt operating for one hour - and equal to 3 -600 joules.






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






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






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






35. CSA ~LINK~






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






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






38. IEEE;






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






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






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






42. Normally Open.






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






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






45. The rate at which electricity flows - measured in amperes - 1 ampere = 1 coulomb per second.






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






47. An electromagnetic radiation produced when the inner satellite electrons of heavy atoms have been excited by collision with a stream of fast electrons return to their ground state - giving up the energy previously imparted to them.






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






49. Chemical changes and energy produced by electric currents.






50. The amount of time it takes for a device to react to an input signal.