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






2. OSHA;






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






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






5. The rate of transfer of energy.






6. The electrical demand of a process. Load can be expressed or calculated as amps (current) - ohms (resistance) or watts (power).






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






8. 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.






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






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






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






12. 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.






13. Chemical changes and energy produced by electric currents.






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






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






16. The power of one watt operating for one hour - and equal to 3 -600 joules.






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






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






19. 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.'






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






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






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






23. Normally Closed.






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






25. NEMA;






26. One thousandth of an inch.






27. The time based relationship between a reference and a periodic function.






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






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






30. A controller whose action is either fully on or off.






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






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






33. An anode (+) or cathode (-) conductor on a device through which an electric current passes.






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






35. IBEW;






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






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






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






39. 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.






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






41. A circuit which may have one or many resistors and/or other various devices connected in a series so that the current has only one path to follow.






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






43. FM; ~LINK~






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






45. In a three phase connection all three phases are connected in series thus forming a closed circuit.






46. 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.






47. Volt-ohm Meter.






48. 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.






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






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