Which consequence results when a waveguide's dimensions restrict transverse EM wave propagation?

💡 Explanation

Evanescent modes appear because, below the cutoff frequency, wave impedance becomes imaginary; therefore, wave propagation ceases exponentially, rather than energy transferring effectively and propagating freely.

• Which risk increases when the iron core in a massive, aging star exceeds theoretical Chandrasekhar Limit?
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• Which constraint causes reduced efficiency when superheated steam undergoes gas-to-liquid phase transition in a turbine?
• Which risk increases when impedance mismatches electrical length?
• Which outcome occurs when a cryogenic fluid transitions to gas?
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