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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. A fluctuation in the intensity of a steady current.






2. 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






3. Expressed in webers - it is the product of the average normal component of the magnetic intensity over a surface and the area of that surface.






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






5. ISA;






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






7. The standard unit of magnetic flux.






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






9. UL; ~LINK~






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






11. A positive (+) electrode. The point where electrons exit from a device to the external electric circuit.






12. An area in which combustible or flammable mixtures are or could be present.






13. A tube - pipe or trough that carries and protects electric wiring.






14. A variable resistor.






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






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






17. 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.






18. The difference in potential measured between two points caused by resistance or impedance.






19. Kva; One thousand volt amps.






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






21. kV; One thousand volts.






22. The amount of heat needed to convert one pound of water to one pound of steam. Latent heat is expressed in BTU per pound.






23. One millionth of an amp.






24. The opposition to electrical flow.






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






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






27. FM; ~LINK~






28. A temperature scale. Also known as centigrade. Sea level water will freeze at 0






29. A material used to conduct electricity or heat.






30. Radio Frequency Interference.






31. A variable resistor.






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






33. A switch with contacts that are made with actuating force and released when that force is removed.






34. The rate of transfer of energy.






35. 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.






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






37. One of the very small discrete packets into which many forms of energy are subdivided.






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






39. 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.






40. SI; The standard metric system of units.






41. The unit by which electrical resistance is measured. One ohm is equal to the current of one ampere which will flow when a voltage of one volt is applied






42. 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.






43. Kw; One thousand watts.






44. The rapid on/off cycling of a relay caused by improper signal or adjustment - faulty contacts - or other malfunction.






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






46. 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.






47. A meter used to measure units of volts.






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






49. OSHA;






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







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