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 variable resistor.






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






3. Resistance Temperature Detector.






4. CSA ~LINK~






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






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






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






8. Volt-ohm Meter.






9. An ionized gas containing about equal numbers of positive and negative charges - which is a good conductor of electricity - and is affected by a magnetic field.






10. Kwh; One thousand watt-hours.






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






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






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






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






15. 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.






16. 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.






17. The moving of electricity or heat through a conductor.






18. Symbol used to denote transmitter.






19. ANSI;






20. Kva; One thousand volt amps.






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






22. 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.






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






24. 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.'






25. A positive (+) electrode. The point where electrons exit from a device to the external electric circuit.






26. Normally Open.






27. Magnetically - opposite poles - north and south. In electricity - oppositely charged poles - positive and negative.






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






29. Chemical changes and energy produced by electric currents.






30. 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.






31. A material used to conduct electricity or heat.






32. MA; One thousandth of an amp.






33. The time based relationship between a reference and a periodic function.






34. A full-wave rectifier where the diodes are connected in a bridge circuit. This allows the current to the load during both the positive and negative alternating of the supply voltage.






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. 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






37. The rapid on/off cycling of a relay caused by improper signal or adjustment - faulty contacts - or other malfunction.






38. Inspection - analysis and action required to ensure quality of output.






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






40. See; 'Proximity Sensor'.






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






42. Mm; One thousandth of a meter.






43. 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.






44. SI; The standard metric system of units.






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






46. FM; ~LINK~






47. OSHA;






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






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






50. 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.