Automatic Control Systems - Engineering

Q1:

For the block diagram of the given figure, the equation describing system dynamics is

A (1 + RCs) Δθ0(s) = Δθi(s) + R Δ H(s)

B (1 + RCs) [ΔH(s)] = Δθ(s) - Δθ0(s)

C (1 + RCs) Δθ0(s) = RΔ H(s) - Δ θi(s)

D (1 + RCs) Δθi(s) = Δ H(s)[R] - Δθ0(s)

ANS:A - (1 + RCs) Δθ0(s) = Δθi(s) + R Δ H(s)

Total input is [ΔH (s)]R + [ΔQi (s)]. This input gets multiplied by to give AQ0(s).