Which characteristic is NOT listed as an advantage of quartz transducers in ultrasonic search units?

• A. Mechanical stability
• B. Insolubility in liquids
• C. Resistance to aging
• D. Solubility in liquids

Answer: (D)

Quartz transducers are valued in ultrasonic search units for their stable piezoelectric response and durability. Their mechanical stability keeps their shape and properties consistent during scanning, while resistance to aging means the frequency and sensitivity don’t drift over time. Insolubility in liquids prevents the crystal from dissolving or degrading when in contact with immersion fluids or couplants, preserving integrity and signal quality. Solubility in liquids would undermine these benefits, leading to chemical attack and unreliable signals. So the characteristic that is not an advantage is solubility in liquids.