Question
Download Solution PDFThe open-loop transfer function of a unity feedback system is The gain K that results in a phase margin of 45° is
This question was previously asked in
ESE Electronics 2016 Paper II: Official Paper
Answer (Detailed Solution Below)
Option 1 : 35
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ST 1: UPSC ESE (IES) Civil - Building Materials
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Detailed Solution
Download Solution PDFConcept:
The phase margin is given by
ωgc is gain crossover frequency.
At gain cross over frequency, the magnitude is unity.
Calculation:
Given that phase margin = 45°
⇒ ωgc = 5 rad/sec
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