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 moving of electricity or heat through a conductor.






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






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






4. 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.






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






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






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. Electrical energy produced by the action of heat.






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






10. 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.'






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






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






13. Silicone Controlled Rectifier.






14. An electrical resistor composed of semiconductor material - whose resistance is a known rapidly varying function of temperature.






15. IEEE;






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






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






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






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






20. IEC;






21. The rate of transfer of energy.






22. A three terminal semiconductor device. In a 'FET' the current is from source to drain because a conducting channel is formed by a voltage field between the gate and the source.






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






24. -459.67






25. Current Consumption. The amount of amps or milliamps needed to maintain operation of a control or device.






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






27. A unit of electric charge. The amount of charge conveyed in one second by one ampere.






28. Very High Frequency.






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






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






31. Normally Closed.






32. 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.






33. A hypothetical nuclear of a quark plus an antiproton.






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






35. 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(-).






36. Ultra High Frequency






37. Chemical changes and energy produced by electric currents.






38. Expressed in webers - it is the product of the average normal component of the magnetic intensity over a surface and the area of that surface.






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






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






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






42. (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'






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






44. 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.






45. RMS; AC voltage that equals DC voltage that will do the same amount of work. For an AC sine wave it is 0.707 x peak voltage.






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






47. NEMA;






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






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






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