What is the polar form of G(jω)H(jω)?

G(jω)H(jω) = |G(jω)H(jω)|∠G(jω)H(jω)

Fill in the blank: The positive angle in a polar graph is measured in the ______ direction.

Anti-clockwise

True or False: The angular frequency in the polar plot varies from negative infinity to positive infinity.

False. The angular frequency in the polar plot varies from zero to infinity.

What effect does the addition of a pole have on the polar plot?

It shifts its end by -90 degrees.

Riddle: I start at -90 degrees and end at -180 degrees, marking the path of a type 1 system. What am I?

The polar plot of a type 1 system.

Which plot is an extension of the polar plot?

Nyquist plot

Fill in the blank: The gain margin is given by Kg = 1/______.

GB

What is the primary advantage of the polar plot?

It depicts the frequency response characteristics of a system over the entire frequency range in a single plot.

True or False: The phase margin is calculated when the magnitude curve intersects with the external unity circle.

True.

In the polar plot, the addition of a zero will shift its end by ______ degrees.

+90 degrees

What does the phase crossover frequency refer to in the context of the polar plot?

The frequency at which the polar plot crosses the -180° line.

Riddle: I can be used to determine the stability of a control system, drawing curves from 0 to infinity. What am I?

Nyquist plot