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 speed or time rate of change of displacement.






2. The energy delivered by a circuit or device. The electrical signal produced by the input to the transducer.






3. (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'






4. Variable Frequency.






5. Kw; One thousand watts.






6. ISO;






7. FM; ~LINK~






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






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






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






11. -459.67






12. An area in which combustible or flammable mixtures are or could be present.






13. Resistance Temperature Detector.






14. A solid-state switching device used in switching AC wave forms.






15. Very High Frequency.






16. Commonly used in generators and motors - it is an electromagnet formed from a coil of insulated wire that is wound around a soft iron core.






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






18. Output power divided by input power - (work performed in ratio to energy used to produce it).






19. An electrical circuit that is not 'made'. Contacts - switches or similar devices are open and preventing the floe of current.






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






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






22. 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.






23. A device incorporating semiconductor material and suitable contacts capable of performing electrical functions (such as voltage - current or power amplification) with low power requirements.






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






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






26. A material used to conduct electricity or heat.






27. An arrangement of any of various conductors through which electric current can flow from a supply current.






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






29. MA; One thousandth of an amp.






30. NFPA;






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






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






33. MV; One thousandth of a volt. The difference in potential needed to cause a current of one milliampere flow through a resistance of one ohm.






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






35. Symbol for Mega - one million.






36. The amount of energy released in a nuclear reaction. It is expressed in atomic mass units - or in million electron volts (MEV).






37. The amount of heat needed to convert one pound of water to one pound of steam. Latent heat is expressed in BTU per pound.






38. Pressure that is less than atmospheric pressure.






39. Applying molecular physics to electronics.






40. 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.






41. ANSI;






42. MLS; A photoelectric control that operates on pulsed infrared radiation at a specific frequency - and responds only to that frequency of pulse. MLS is used frequently in areas where ambient light may cause problems with other types of sensors.






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






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






45. The unit by which electrical resistance is measured. One ohm is equal to the current of one ampere which will flow when a voltage of one volt is applied






46. One millionth of an amp.






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






48. One millionth of a meter.






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






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