A system with unity feedback having open loop transfer function as G(s – McqOptions

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1.	A system with unity feedback having open loop transfer function as G(s) = K(s+1)/s3+as2+2s+1. What values of ‚Äö√Ñ√∂‚àö√ë‚àö‚â§K‚Äö√Ñ√∂‚àö√ë‚àö¬• and ‚Äö√Ñ√∂‚àö√ë‚àö¬•a‚Äö√Ñ√∂‚àö√ë‚àö¬• should be chosen so that the system oscillates ?
A.	K =2, a =1
B.	K =2, a =0.75
C.	K =4, a =1
D.	K =4, a =0.75
Answer» C. K =4, a =1

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