At the gain crossover frequency of a =ystem, the phase angle is about -141 How much phase margin does this syst nave? Select one: O a. - 90° O b. - 180° I 819

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At the gain crossover frequency of a
system, the phase angle is about -141°.
How much phase margin does this system
have?
Select one:
a. - 90°
O b. - 180°
O c. + 81°
O d. + 39°
Transcribed Image Text:At the gain crossover frequency of a system, the phase angle is about -141°. How much phase margin does this system have? Select one: a. - 90° O b. - 180° O c. + 81° O d. + 39°
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