ABYC Marine Electrical Practice Exam

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Which tool is commonly used to test for excessive EMF emission?

  1. Multimeter

  2. Oscilloscope

  3. Guass meter

  4. Digital voltmeter

The correct answer is: Guass meter

A Gauss meter is specifically designed to measure electromagnetic fields (EMF) and is commonly used to test for excessive EMF emissions. This tool can provide readings of magnetic field strength and frequency, enabling it to assess how much electromagnetic radiation is present in an area. In contrast, while tools like a multimeter or digital voltmeter are excellent for measuring voltage, current, and resistance in electrical systems, they are not equipped to measure electromagnetic fields. An oscilloscope, while capable of visualizing electronic signals over time, does not measure EMF directly; rather, it shows waveform characteristics. Therefore, for the purpose of assessing EMF emissions, the Gauss meter is the appropriate choice.

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