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






2. 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.






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






4. EPA; ~LINK~






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






6. Silicone Controlled Rectifier.






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






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






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






10. 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.






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






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






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






14. Intensity. The commonly used symbol used to represent Amperes when used in formulas. I = Intensity = Current = Amps = Amperes.






15. UL; ~LINK~






16. IEC;






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






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






19. -459.67






20. Electric current passing through an electrolyte which produces chemical changes in it.






21. (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'






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






23. A solid-state switching device for semiconductors to convert AC current in one of two directions controlled by an electrode.






24. Normally Closed.






25. An electrical circuit that increases the power - voltage or current of an applied signal.






26. The delayed period of time when outputs are turned off when power is initially applied.






27. Pressure that is less than atmospheric pressure.






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






29. 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






30. The rate of transfer of energy.






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






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






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






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






35. One millionth of a meter.






36. A variable resistor.






37. ISA;






38. 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.






39. That part of a circuit which is physically interconnected.






40. Electrical energy produced by the action of heat.






41. Symbol for Mega - one million.






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






43. Also known as Hertz - it is the number of complete cycles of periodic waveform that occur during a time period of one second.






44. kV; One thousand volts.






45. Very High Frequency.






46. A device used to store electrical energy in an electrostatic field until discharge.






47. A sudden and unwanted increase or decrease of supply voltage or current.






48. Applying molecular physics to electronics.






49. The average temperature of a process.






50. The difference in potential measured between two points caused by resistance or impedance.






Can you answer 50 questions in 15 minutes?



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