GATE2012-54

Question

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

$G_c(s)$ is a lead compensator if

• A. $a=1, \: b=2$
• B. $a=3, \: b=2$
• C. $a=-3, \: b=-1$
• D. $a=3, \: b=1$