Chemical Engineering - Process Control and Instrumentation - Discussion

Discussion Forum : Process Control and Instrumentation - Section 3 (Q.No. 37)

Process Control and Instrumentation

37.

For the block diagram shown below :

The characteristic equation is

τ_l S (τ_ps + 1) + K_c . K_p (τ_lS + 1) e^{-τ_d s} = 0

(τ_mS + 1) (τ_pS + 1) + K_m . K_p e^{-τ_d S} = 0

τ_l S(τ_m S + 1) (τ_p S + 1) +K_c . K_p . K_m (τ_l s + 1) e-τ_dS = 0

(τ_ms + 1) (τ_p s + 1) + K_c . K_p . K_m . e^-τ_dS = 0

Answer: Option

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