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. IBEW;






2. Volt-ohm Meter.






3. CSA ~LINK~






4. NEMA;






5. ANSI;






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






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






8. 'British Thermal Unit' - the amount of thermal energy required to raise one pound of water 1degree F. One BTU is equal to .293 watt hours. One kWh is equal to 3412 BTUs.






9. Mm; One thousandth of a meter.






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






11. A fluctuation in the intensity of a steady current.






12. 'Common Mode Voltage.' The voltage which is tolerable between signal and ground.






13. Response to the change in the level of the input signal.






14. Magnetically - opposite poles - north and south. In electricity - oppositely charged poles - positive and negative.






15. 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(-).






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






17. A hypothetical basic subatomic nuclear particle believed to be the basic component of protons - neutrons - etc.






18. 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.






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






20. The modification of a signal that causes the output to remain energized until it is released by intent.






21. 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.






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






23. (ampere)The basic unit of current in an electrical circuit. One ampere is the rate of flow of electric current when one coulomb of charge flows past a point in the circuit in one second. Symbolically characterized by the letter 'I' and sometimes 'A'






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






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






26. The energy delivered by a circuit or device. The electrical signal produced by the input to the transducer.






27. The standard unit of magnetic flux.






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






29. Protective circuitry to guard against spikes that might be induced on the supply line.






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






31. NFPA;






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






33. UL; ~LINK~






34. 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.






35. One millionth of an amp.






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






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






38. The output that is produced when one or more inputs are present.






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






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






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






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






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






44. 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






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






46. Kva; One thousand volt amps.






47. Applying molecular physics to electronics.






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






49. (DC); Electrical current that flows consistently in one direction only.






50. Very High Frequency.