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Which outcome occurs when a microwave's waveguide internal dimension resonates?

A)Maximum power is transferred to load
B)Phase velocity matches group velocity
C)Antenna impedance approaches 50 ohms
D)Cavity magnetron no longer oscillates

💡 Explanation

Maximum power transfer occurs because constructive interference amplifies the electromagnetic waves via standing waves, a resonance mechanism. Therefore, power absorbed is maximized, rather than mismatched impedance or compromised phase velocities under standard microwave conditions resulting disrupted oscillation.

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