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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. Normally Closed.






2. 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.






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






4. 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






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






6. Very High Frequency.






7. 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.






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






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






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






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






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






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






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






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






16. FM; ~LINK~






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






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






19. A form of energy produced by the flow of particles of matter and consists of commonly attractive positively (protons [+]) and negatively (electrons [-]) charged atomic particles. A stream of electrons - or an electric current.






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






21. One thousandth of an inch.






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






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






24. The average temperature of a process.






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






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






27. 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.






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






29. 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.






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






31. A material used to conduct electricity or heat.






32. Symbol used to denote transmitter.






33. Radio Frequency Interference.






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






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






36. 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.






37. 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.






38. Ultra High Frequency






39. A variable resistor.






40. 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.






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






42. IEC;






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






44. A controller whose action is either fully on or off.






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






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






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






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






49. The opposition to electrical flow.






50. ISA;







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


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