Control Systems A cascade of three linear time invariant systems is causal and unstable. From this we conclude that each system in the cascade is individually caused and unstable. at least one system is causal and all systems are unstable. the majority are unstable and the majority are causal. at least one system is unstable and at least one system is causal. each system in the cascade is individually caused and unstable. at least one system is causal and all systems are unstable. the majority are unstable and the majority are causal. at least one system is unstable and at least one system is causal. ANSWER DOWNLOAD EXAMIANS APP
Control Systems When the polynomial is Routh Hurwitz, the roots of function have real parts which are to be zero/negative. the function is not real. none of these. all zeroes lie in the right half of the s-plane. the roots of function have real parts which are to be zero/negative. the function is not real. none of these. all zeroes lie in the right half of the s-plane. ANSWER DOWNLOAD EXAMIANS APP
Control Systems Which of the following combinations is/are correct electrical analogous elements in force-current analogy? Velocity (v) ----------------- Voltage (V) Force (f) --------------------- Current (i) All of these Spring element (K) --------- Inverse inductance (1/L) Velocity (v) ----------------- Voltage (V) Force (f) --------------------- Current (i) All of these Spring element (K) --------- Inverse inductance (1/L) ANSWER DOWNLOAD EXAMIANS APP
Control Systems The closed loop transfer function of a unity feedback control system is 9/(s² + 3s + 9), then the type of the system is 1 0 2 3 1 0 2 3 ANSWER DOWNLOAD EXAMIANS APP
Control Systems The optimum values of damping ratio is -------------- 0 to 2 0.3 to 5 0.9 to 1.1 0.3 to 0.7 0 to 2 0.3 to 5 0.9 to 1.1 0.3 to 0.7 ANSWER DOWNLOAD EXAMIANS APP
Control Systems A system of constant voltage and constant frequency is called _________________ system. None of these feedback. zero. infinite. None of these feedback. zero. infinite. ANSWER DOWNLOAD EXAMIANS APP
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