Distortion in plasma arc cutting is generally:

• A. Distortion is typically reduced
• B. Distortion is typically increased
• C. Distortion varies unpredictably
• D. Distortion is unaffected

Answer: (A)

Plasma arc cutting concentrates heat into a narrow, high-temperature zone and removes metal quickly, which keeps the heat-affected zone small. Because the metal around the cut doesn’t heat up as much and the cut happens faster, thermal gradients and residual stresses are reduced as the piece cools. That means the part tends to warp less than with methods that apply heat more broadly or for longer times. So, distortion is typically reduced with plasma arc cutting. The other possibilities imply more heat or no effect, which doesn’t match how plasma cutting behaves in practice, where the focused, rapid heat input minimizes warping.