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. A fluctuation in the intensity of a steady current.






2. An interconnected arrangement of parts for carrying high-voltage electricity.






3. A three mode control consisting of time Proportioning - Integral and Derivative rate action.






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






5. When there is current through a semiconductor p-n junction it is the resistance of a forward-biased junction.






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






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






8. The mechanism of a switch which operates the contacts.






9. 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.






10. The speed or time rate of change of displacement.






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






12. The average temperature of a process.






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






14. 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.






15. 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.






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






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






18. UL; ~LINK~






19. 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.






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






21. The quality of having the ability to emit light when struck by electrons or another form of radiation.






22. RMS; AC voltage that equals DC voltage that will do the same amount of work. For an AC sine wave it is 0.707 x peak voltage.






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






24. SI; The standard metric system of units.






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






26. 'American Wire Gauge' system used to determine wire size.






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






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






29. The time it takes for a controller to complete one on/off cycle.






30. A meter used to measure electrical resistance in units of ohms.






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






32. 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(-).






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






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






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






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






37. Electric and magnetic force field that surrounds a moving electric charge.






38. 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.






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






40. A solid-state switching device for semiconductors to convert AC current in one of two directions controlled by an electrode.






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






42. OSHA;






43. The conductor that is used by intent to connect the grounded circuit of an electrical wiring system or equipment to a grounding electrode with reference to earth.






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






45. MLS; A photoelectric control that operates on pulsed infrared radiation at a specific frequency - and responds only to that frequency of pulse. MLS is used frequently in areas where ambient light may cause problems with other types of sensors.






46. -459.67






47. An electrical circuit that is not 'made'. Contacts - switches or similar devices are open and preventing the floe of current.






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






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






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