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






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






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






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






5. Mm; One thousandth of a meter.






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






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






8. (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'






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






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






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






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






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






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






15. A fundamental negatively (-) charged atomic particle that rotates around a positively (+) charged nucleus of the atom.






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






17. A variable resistor.






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






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






20. Silicone Controlled Rectifier.






21. Pressure that is less than atmospheric pressure.






22. The opposition to electrical flow.






23. One millionth of a meter.






24. 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(-).






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






26. The unit for capacitance. A capacitor that stored one coulomb of charge with one volt across it will have a value of one farad.






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






28. A reference point at zero potential with respect to the earth. In an electronic circuit it is the common return path for electric current. A conducting connection between the earth and an electrical circuit or electrical equipment. Also - the negativ






29. IBEW;






30. A switching device used in switching high DC loads. It contains a small permanent magnet which deflects arc in order to quench it.






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






32. Kwh; One thousand watt-hours.






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






34. Symbol for Mega - one million.






35. Kva; One thousand volt amps.






36. Resistance Temperature Detector.






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






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






39. The basic of thermal energy. The work done by the force of one newton acting through a distance of one meter.






40. Electrical energy produced by the action of heat.






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






42. 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.






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






44. The difference in potential measured between two points caused by resistance or impedance.






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






46. FM; ~LINK~






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






48. OSHA;






49. Also known as Hertz - it is the number of complete cycles of periodic waveform that occur during a time period of one second.






50. ANSI;