The polar plot of the transfer function G(s)=10(s+1)s+10for0≤ω≤∞ will be in the
A
first quadrant
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B
second quadrant
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C
third quadrant
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D
fourth quadrant
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Solution
The correct option is A first quadrant G(s)=10(s+1)(s+10)
For ω=0⇒M1=1andϕ=0∘ ω=∞⇒M2=10
and ϕ2=−tan−1∞+tan−1∞=0∘ ∴ Polar plot
As the zero is nearer to the imaginary axis hence the direction of polar plot is clockwise.