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. Kw; One thousand watts.






2. 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.






3. -459.67






4. Kwh; One thousand watt-hours.






5. 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.






6. The range of voltage needed to maintain operation of a control or device.






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






8. One thousandth of an inch.






9. Very High Frequency.






10. To close an electrical circuit. To establish an electrical circuit through the closing of a contact - switch or other related device.






11. A variable resistor.






12. IEC;






13. The maximum temperature at which a device can be safely operated.






14. OSHA;






15. Volt-ohm Meter.






16. A coil of wire wound about a magnetic material - such as iron - that produces a magnetic field when current flows through the wire.






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






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






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






20. The pronounced curvature in reverse voltage current that is characteristic of a diode.






21. FM; ~LINK~






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






23. kV; One thousand volts.






24. One millionth of a meter.






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






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






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






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






29. ANSI;






30. A material used to conduct electricity or heat.






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






32. 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.






33. Variable Frequency.






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






35. 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.






36. '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.






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






38. The adjustment of a display that results are zero on the display corresponding to a non-zero signal.






39. 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.






40. 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.






41. Non-conducting material used to isolate and/or insulate energized electrical components.






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






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






44. IBEW;






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






46. 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(-).






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






48. LED; A solid state light source component that emits light or invisible infrared radiation.






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






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