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← ScienceWhich outcome occurs when a magnetostrictive transducer drives ultrasonic waves at resonance?
A)Amplified mechanical oscillation occurs creating cavitation✓
B)Reduced coupling efficiency loses acoustic power
C)Increased electrical resistance lowers total current
D)Overheating induces irreversible magnetic saturation
💡 Explanation
Amplified mechanical oscillations leading to cavitation occur because the magnetostrictive transducer efficiently converts magnetic energy to mechanical resonance according to the principle of magnetostriction; therefore acoustic energy increases rapidly in the medium, rather than limiting, because damping losses become significant at off-resonance.
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