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 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.






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






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






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






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






6. Pressure that is less than atmospheric pressure.






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






8. NEC: A set of regulations pertaining to electrical installation and design in the interest of the protection of life and property. The NEC is adopted by NFPA and approved by ANSI. It is the preferred standard of guidelines used by most electrical reg






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






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






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






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






13. A device - instrument or component that will not produce any spark or thermal effects under any conditions that are normal or abnormal that will ignite a specified gas mixture. Electrical and thermal energy limits are at levels incapable of causing i






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






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






16. 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.






17. A circuit conductor that is grounded to become part of the electric circuit by design and intent.






18. 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






19. 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.






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






21. A device that converts AC voltage to pulsating DC voltage.






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






23. ISO;






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






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






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






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






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






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






30. One thousandth of an inch.






31. The modification of a signal that causes the output to remain energized until it is released by intent.






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






33. Resistance Temperature Detector.






34. A meter used to measure units of volts.






35. Applying molecular physics to electronics.






36. (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'






37. 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.






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






39. The opposition to electrical flow.






40. FM; ~LINK~






41. The range of temperature over which a device may be safely used. The temperature range which the device has been designed to operate.






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






43. CSA ~LINK~






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






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






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






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






48. A variable resistor.






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






50. 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.