Non-Destructive Testing (NDT) Practice Test

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The dead weight check ensures what aspect of magnetic testing?

  1. The accuracy of the reading

  2. The strength of the magnetic field

  3. The speed of the inspection

  4. The temperature of the test piece

The correct answer is: The strength of the magnetic field

The dead weight check is a method used to calibrate and verify the strength of the magnetic field during magnetic testing. By applying a known weight to a magnetic yoke or system, you can determine if the generated magnetic field is strong enough to detect flaws or discontinuities in the material being tested. This procedure is crucial because the effectiveness of magnetic testing is highly dependent on the strength of the magnetic field; insufficient magnetization may lead to missed defects. In this context, the other aspects mentioned like the accuracy of the reading, the speed of the inspection, and the temperature of the test piece are not directly related to what the dead weight check evaluates. While they are all important factors in the overall testing process, the primary function of the dead weight check specifically aligns with assessing the magnetic field strength.

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