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. Kva; One thousand volt amps.






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






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






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






5. Symbol used to denote transformer.






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






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






8. 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(-).






9. The act of the opening of an electrical circuit.






10. ISA;






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






12. A meter used to measure units of volts.






13. 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.






14. Symbol for Mega - one million.






15. 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.






16. A switching device used in switching high DC loads. It contains a small permanent magnet which deflects arc in order to quench it.






17. See; 'Maximum Power Rating'.






18. European environmental ratings. Similar to NEMA ratings in the USA. IP;*site has NEMA comparisons ~LINK~






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






20. 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.'






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






22. 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.






23. The interaction of magnetism and electrical current.






24. One millionth of a meter.






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






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






27. Pressure that is less than atmospheric pressure.






28. MA; One thousandth of an amp.






29. Normally Closed.






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






31. Normally Open.






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






33. The standard unit of magnetic flux.






34. A variable resistor.






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






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






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






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






39. A reference point at zero potential with respect to the earth. In an electronic circuit it is the common return path for electric current. A conducting connection between the earth and an electrical circuit or electrical equipment. Also - the negativ






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






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






42. Intensity. The commonly used symbol used to represent Amperes when used in formulas. I = Intensity = Current = Amps = Amperes.






43. IEEE;






44. A region of space that surrounds a moving electrical charge or a magnetic pole - in which the electrical charge or magnetic pole experiences a force that is above the electrostatic ones associated with particles at rest.






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






46. A variable resistor.






47. Ultra High Frequency






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






49. A highly accurate bridge configuration that is used to measure three-wire RTD thermometers.






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