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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. Pressure that is less than atmospheric pressure.






2. A form of control where the power supplied to a process is controlled by limiting the phase angle of the line voltage.






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






4. The resistance to electrical current. Resistance is measured in ohms.






5. Volt-ohm Meter.






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






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






8. Or Hertz; The measurement of the time period of one alternating electric current. In the United States this is commonly 60 cycles per second - or 60 Hertz.






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






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






11. See; 'Maximum Power Rating'.






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






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






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






15. One millionth of a meter.






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






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






18. A tube - pipe or trough that carries and protects electric wiring.






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






20. 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.






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






22. The quality of having the ability to emit light when struck by electrons or another form of radiation.






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






24. 'British Thermal Unit' - the amount of thermal energy required to raise one pound of water 1degree F. One BTU is equal to .293 watt hours. One kWh is equal to 3412 BTUs.






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






26. OSHA;






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






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






29. Normally Open.






30. Protective circuitry to guard against spikes that might be induced on the supply line.






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






32. The element inside a vacuum tube - incandescent lamp or other similar device.






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






34. Applying molecular physics to electronics.






35. A switch with contacts that are made with actuating force and released when that force is removed.






36. A negative (-) electrode. The point of entry of electrons into a device from an external circuit. The negative electrode of a semiconductor diode.






37. The standard unit of magnetic flux.






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






39. 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.






40. 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






41. A small current leaking from an output device in the off state caused by semiconductor characteristics.






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






43. IEC;






44. Silicone Controlled Rectifier.






45. Electric and magnetic force field that surrounds a moving electric charge.






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






47. IEEE;






48. See; 'Proximity Sensor'.






49. A variable resistor.






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