1.

For the block diagram shown below : The characteristic equation is

A. ? l S (? p s + 1) + K c . K p (? l S + 1) e -? d s = 0
B. (? m S + 1) (? p S + 1) + K m . K p e -? d S = 0
C. ? l S (? m S + 1) (? p S + 1) + K c . K p . K m (? l s + 1) e -? d S = 0
D. (? m s + 1) (? p s + 1) + K c . K p . K m . e -? d S = 0
Answer» D. (? m s + 1) (? p s + 1) + K c . K p . K m . e -? d S = 0


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