Control Systems When the input to a system was with drawn at t = 0, its output was found to decrease exponentially from 1000 units to 500 units in 1.386 sec. The time constant of the system is 1.386. 2.000. 0.693. 0.500. 1.386. 2.000. 0.693. 0.500. ANSWER DOWNLOAD EXAMIANS APP
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) Tω1 = tan(ω1) Tω1 = cot(ω1) ω1 = cot(Tω1) ω1 = tan(Tω1) Tω1 = tan(ω1) Tω1 = cot(ω1) ω1 = cot(Tω1) ANSWER DOWNLOAD EXAMIANS APP
Control Systems Advantages of open loop control system is/are reliable. simple and economical. accurate. All of these reliable. simple and economical. accurate. All of these ANSWER DOWNLOAD EXAMIANS APP
Control Systems Time response for a second order control system depends on value of ξ. If ξ>1 then the system is called as over damped system. critically damped system. undamped system . under damped system. over damped system. critically damped system. undamped system . under damped system. ANSWER DOWNLOAD EXAMIANS APP
Control Systems The open loop transfer function of a unity feedback control system is given by G(s) = k/s(s+1). If gain k is increased to infinity, then damping ratio will tend to become zero 0.707 unity infinite zero 0.707 unity infinite ANSWER DOWNLOAD EXAMIANS APP
Control Systems A proportional plus derivative controller improves the steady state accuracy has high sensitivity increases the stability of the system both 1 and 2 improves the steady state accuracy has high sensitivity increases the stability of the system both 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
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