For the block diagram shown below : The characteristic equation is ?l S (?ps + 1

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Question
For the block diagram shown below :

The characteristic equation is
Options
A. ?_l S (?_ps + 1) + K_c . K_p (?_lS + 1) e^{-?_d s} = 0
B. (?_mS + 1) (?_pS + 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-?_dS = 0
D. (?_ms + 1) (?_p s + 1) + K_c . K_p . K_m . e^-?_dS = 0

Correct Answer

?_l S(?_m S + 1) (?_p S + 1) +K_c . K_p . K_m (?_l s + 1) e-?_dS = 0

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Options
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