The characteristic equation of a unity feedback control system is given by s3 + K1s2 + s + K2 = 0. Consider the following statements in this regard1. For a given of K1, all the root-locus branches will terminate at infinity for K2 in the positive direction. 2. For a given value of K2, all the root-locus branches will terminate at infinity for variable K1 in the positive direction. 3. For a given value of K2, only one root-locus branch will terminate at infinity for variable K1 in the positive direction. Of these statements

The characteristic equation of a unity feedback control system is give

1.	The characteristic equation of a unity feedback control system is given by s³ + K₁s² + s + K₂ = 0. Consider the following statements in this regard 1. For a given of K₁, all the root-locus branches will terminate at infinity for K₂ in the positive direction. 2. For a given value of K₂, all the root-locus branches will terminate at infinity for variable K₁ in the positive direction. 3. For a given value of K₂, only one root-locus branch will terminate at infinity for variable K₁ in the positive direction. Of these statements
A.	1 and 2 are correct
B.	3 alone is correct
C.	2 alone is correct
D.	1 and 3 are correct
Answer» B. 3 alone is correct

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