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






2. A switch in a controller that manually resets after exceeding the controllers limit.






3. Pressure that is less than atmospheric pressure.






4. An electrical resistor composed of semiconductor material - whose resistance is a known rapidly varying function of temperature.






5. 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.






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






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






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






9. Variable Frequency.






10. A unit of electric charge. The amount of charge conveyed in one second by one ampere.






11. A circuit element or components that allows signals of certain frequencies to pass and blocks signals of other frequencies.






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






13. Non-conducting material used to isolate and/or insulate energized electrical components.






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






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






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






17. A full path of electrical current from a voltage source that passes completely from one terminal of the voltage source to another.






18. 'Common Mode Voltage.' The voltage which is tolerable between signal and ground.






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






20. Symbol used to denote transmitter.






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






22. 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.'






23. 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.






24. 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.






25. Symbol for Mega - one million.






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. Resistance Temperature Detector.






28. One millionth of a volt.






29. 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






30. ISA;






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






32. A meter used to measure units of volts.






33. A temperature scale. Also known as centigrade. Sea level water will freeze at 0






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






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






36. The measure of the ability of a material or substance to carry electrical current.






37. The standard unit of magnetic flux.






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






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






40. Electrical energy produced by the action of heat.






41. IEEE;






42. Normally Closed.






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






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






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






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






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






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






49. A process that is kept at a constant temperature.






50. A silicone semiconductor that maintains a fixed voltage in a circuit.