What is the significance of the Amplitude Ratio at Zero Frequency?
You should have noticed that the Amplitude Ratio at Zero Frequency is equal to the gain of the process.
What is the maximum (negative) value of the Phase Angle?
The Phase Angle (measured in degrees) tends to the value of -90.
What is the effect of the time constant on the Phase Angle?
When the time constant is increased the Phase Angle tends towards -90 at a quicker rate.
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