Control Systems A unity feedback control system has forward loop transfer function as e-Ts/s(s+1). Its phase value will be zero at frequency ω1. Which of the following equations should be satisfied by ω1? ω1 = tan(Tω1) ω1 = cot(Tω1) Tω1 = tan(ω1) Tω1 = cot(ω1) ω1 = tan(Tω1) ω1 = cot(Tω1) Tω1 = tan(ω1) Tω1 = cot(ω1) ANSWER DOWNLOAD EXAMIANS APP
Control Systems Error constants of a system are a measure of steady state response as well as transient state response. relative stability. steady state response. transient state response. steady state response as well as transient state response. relative stability. steady state response. transient state response. ANSWER DOWNLOAD EXAMIANS APP
Control Systems If the transfer function of a phase lead compensator is (s+a)/(s+b) and that of a lag compensator is (s+p)/(s+q), then which one of the following sets of conditions must be satisfied? a > b, p < q a < b, p >q a < b, p < q a > b, p > q a > b, p < q a < b, p >q a < b, p < q a > b, p > q ANSWER DOWNLOAD EXAMIANS APP
Control Systems For a transfer function H (s) = P(s) / Q(s), where P (s) and Q (s) are polynomials in s. Then degree of P (s) is independent of degree of Q (s). the degree of P (s) is always greater than the degree of Q (s). maximum degree of P (s) and Q (s) differ at most by one. the degree of P (s) and Q (s) are same. degree of P (s) is independent of degree of Q (s). the degree of P (s) is always greater than the degree of Q (s). maximum degree of P (s) and Q (s) differ at most by one. the degree of P (s) and Q (s) are same. ANSWER DOWNLOAD EXAMIANS APP
Control Systems A system has poles at 0.01 Hz, 1 Hz and 80 Hz; zeros at 5 Hz, 100 Hz and 200 Hz. The approximate phase of the system response at 20 Hz is 180° -180° 90° -90° 180° -180° 90° -90° ANSWER DOWNLOAD EXAMIANS APP
Control Systems Negative feedback in a closed loop control system improves disturbance rejection. reduces sensitivity to parameter variation. All of these reduces gain. improves disturbance rejection. reduces sensitivity to parameter variation. All of these reduces gain. ANSWER DOWNLOAD EXAMIANS APP
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