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The transfer function of a compensator is given as $$G_c(s)=\frac{s+a}{s+b}$$

The phase of the above lead compensator is maximum at 

  1. $\sqrt{2}\;\text{rad/s}$
  2. $\sqrt{3}\;\text{rad/s}$
  3. $\sqrt{6}\;\text{rad/s}$
  4. $\frac{1}{\sqrt{3}}\;\text{rad/s}$
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