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






2. -459.67






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






4. NEMA;






5. IBEW;






6. Variable Frequency.






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






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






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






10. Applying molecular physics to electronics.






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






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






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






14. The amount of power that is consumed and converted to heat.






15. The standard unit of magnetic flux.






16. Volt-ohm Meter.






17. Electrical energy produced by the action of heat.






18. Kva; One thousand volt amps.






19. 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






20. 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.






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






22. An electrically conductive fused salt or a solution where the charge is carried by ionic movement.






23. 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.






24. ISO;






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






26. 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.






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






28. NFPA;






29. Resistance Temperature Detector.






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






31. One millionth of a meter.






32. 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.






33. The current that is gained by a transistor when it is connected in a common emitter circuit.






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






35. EPA; ~LINK~






36. The magnitude and time phase of a quantity - represented by a plotted line.






37. Two dissimilar metals connected at a point - that produce an electrical current whose magnitude is dependent upon the temperature at the junction point.






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






39. A rise and fall of voltage - current - or other faction that would be constant under normal conditions. A pulse that is intentionally induced will have a finite duration time.






40. A unit of electrical current named after French physicist Andr






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






42. 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.






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






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






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






46. In a temperature controller it is the output form that provides a current proportional to the amount of control that is required. Commonly it is the 4 to 20 milliamp current proportioning band that is used in the electronics industry.






47. 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.






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






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






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