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






3. One of the very small discrete packets into which many forms of energy are subdivided.






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






5. kV; One thousand volts.






6. NFPA;






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






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






9. Variable Frequency.






10. Very High Frequency.






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






12. A device that transfers power or energy from one system to another - such as taking a physical quality and changing it to an electrical signal.






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






14. A form of silicone dioxide. Commonly used in the making of radio transmitters and heat resistant products.






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






16. European environmental ratings. Similar to NEMA ratings in the USA. IP;*site has NEMA comparisons ~LINK~






17. Kwh; One thousand watt-hours.






18. 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.






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






20. -459.67






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






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






23. MA; One thousandth of an amp.






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






25. 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






26. A device having two terminals and has a low resistance to electrical current in one direction and a high resistance in the other direction.






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






28. 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.






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






30. Resistance Temperature Detector.






31. In a temperature controller it is the output form that provides a current proportional to the amount of control that is required. Commonly it is the 4 to 20 milliamp current proportioning band that is used in the electronics industry.






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






33. ANSI;






34. 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.






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






36. The element inside a vacuum tube - incandescent lamp or other similar device.






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






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






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. That part of a circuit which is physically interconnected.






41. OSHA;






42. A three mode control consisting of time Proportioning - Integral and Derivative rate action.






43. FM; ~LINK~






44. '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.






45. 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.






46. A meter used to measure units of volts.






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






48. Normally Open.






49. A high-intensity incandescent lamp with a quartz bulb containing an inert gas of iodine or bromine vapor.






50. 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(-).







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