Question: In the TCP/IP network link of Problem 41, let L = 0.8, but assume that the amount of delay is an unknown variable. a. Plot

In the TCP/IP network link of Problem 41, let L = 0.8, but assume that the amount of delay is an unknown variable.

a. Plot the Nyquist diagram of the system for zero delay, and obtain the phase margin.

b. Find the maximum delay allowed for closed-loop stability.

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