Teaching TN TRB EC Mock Test Control Systems Basics of Control Systems

The closed loop transfer function is \(\frac{{s + 2}}{{{s^2} + 5s + 7}}\). What will be the open loop DC gain if unity feedback system is considered for closed loop system?

1
\(\frac{2}{5}\)
2
\(\frac{2}{7}\)
3
\(\frac{5}{2}\)
4
\(\frac{7}{2}\)
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