1.

The open-loop transfer function of a system is\(\frac{{10K}}{{1 + 10s}}\) When the system is converted into a closed-loop with unity feedback, the time constant of the system is reduced by a factor of 20. The value of K is

A. 1.9
B. 1.6
C. 1.3
D. 1
Answer» B. 1.6


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