Which outcome occurs when a microwave oven's waveguide develops corrosion?

💡 Explanation

Corrosion alters the waveguide's dimensions; this causes impedance mismatch and increased signal attenuation because it disrupts resonant Electromagnetic Induction pathways, leading to reduced power delivery therefore uneven heating rather than optimized wave propagation, which requires precise waveguide dimensions.

• Which outcome results when polymer melt viscosity rises excessively during extrusion?
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