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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 meter used to measure units of volts.






2. A material used to conduct electricity or heat.






3. Pounds per square inch absolute. Pressure commonly in reference to vacuum.






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






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






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






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






8. 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.






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






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






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






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






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






14. 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.






15. 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.






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






17. -459.67






18. Pressure that is less than atmospheric pressure.






19. The interaction of magnetism and electrical current.






20. 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.






21. See; 'Maximum Power Rating'.






22. The behavior of charged particles and the steady motion of charge in magnetic and electric fields.






23. 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.'






24. A Solid State relay is a switching device that completes or interrupts a circuit electrically and has no moving parts. A Mechanical relay is an electromechanical device that closes contacts to complete a circuit or opens contacts to interrupt a circu






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






26. The amount of power that is consumed and converted to heat.






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






28. An interconnected arrangement of parts for carrying high-voltage electricity.






29. Kwh; One thousand watt-hours.






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






31. The standard unit of magnetic flux.






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






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






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






35. ANSI;






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






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






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






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






40. Very High Frequency.






41. See; 'Proximity Sensor'.






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






43. 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






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






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






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






47. An electrically conductive fused salt or a solution where the charge is carried by ionic movement.






48. Symbol used to denote transmitter.






49. A connected path to earth or to a conductive body that has a reference potential to earth.






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