# GATE Mechanical 2014 Set 2 | Question: 9

In vibration isolation, which one of the following statements is NOT correct regarding Transmissibility (T)?

1. T is nearly unity at small excitation frequencies
2. T can be always reduced by using higher damping at any excitation frequency
3. T is unity at the frequency ratio of $\sqrt{2}$
4. T is infinity at resonance for undamped systems

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