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






2. Resistance Temperature Detector.






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






4. The standard that is used to make comparison measurements or calibrations.






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






6. 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.






7. 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.






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






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






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






11. A Solid State relay is a switching device that completes or interrupts a circuit electrically and has no moving parts. A Mechanical relay is an electromechanical device that closes contacts to complete a circuit or opens contacts to interrupt a circu






12. A circuit element or components that allows signals of certain frequencies to pass and blocks signals of other frequencies.






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






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. The act of the opening of an electrical circuit.






16. One millionth of an amp.






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






18. The average temperature of a process.






19. One thousandth of an inch.






20. A material used to conduct electricity or heat.






21. The range of voltage needed to maintain operation of a control or device.






22. Chemical changes and energy produced by electric currents.






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






24. OSHA;






25. The maximum watts that a device can safely handle.






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






27. SI; The standard metric system of units.






28. 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






29. ISO;






30. 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.






31. The rate of transfer of energy.






32. One millionth of a meter.






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






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






35. Symbol for Mega - one million.






36. The resistance to electrical current. Resistance is measured in ohms.






37. 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.'






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






39. A high-intensity incandescent lamp with a quartz bulb containing an inert gas of iodine or bromine vapor.






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






41. A meter used to measure units of volts.






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






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






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






45. The amount of energy released in a nuclear reaction. It is expressed in atomic mass units - or in million electron volts (MEV).






46. Pressure that is less than atmospheric pressure.






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






49. (AC); Electrical current that changes (or alternates) in magnitude and direction of the current at regular intervals.






50. A full path of electrical current from a voltage source that passes completely from one terminal of the voltage source to another.







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