Control Systems The characteristic equation of a feedback control is 2s4 + s3 + 3s2 + 5s + 10 = 0. The no of roots in the right half of the s-plane is 3. 4. 2. 0. 3. 4. 2. 0. ANSWER DOWNLOAD EXAMIANS APP
Control Systems Error at corner frequency ωcf of first order control system is ------- ±1 db ±2 db ±3 db ±4 db ±1 db ±2 db ±3 db ±4 db ANSWER DOWNLOAD EXAMIANS APP
Control Systems The second order system defined by 25/(s2 + 5s + 25) is given a step input. The time taken for the output to settle with in 2 % of input is 0.4 sec. 1.6 sec. 2 sec. 1.2 sec. 0.4 sec. 1.6 sec. 2 sec. 1.2 sec. ANSWER DOWNLOAD EXAMIANS APP
Control Systems An open loop control system, represented by the transfer function G ( s ) = ( s - 1 ) / ( s + 2 )( s + 3 ), is unstable and of the minimum phase type. stable and of the minimum phase type. stable and of the non-minimum phase type. unstable and of the non minimum phase type . unstable and of the minimum phase type. stable and of the minimum phase type. stable and of the non-minimum phase type. unstable and of the non minimum phase type . 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? Tω1 = cot(ω1) Tω1 = tan(ω1) ω1 = tan(Tω1) ω1 = cot(Tω1) Tω1 = cot(ω1) Tω1 = tan(ω1) ω1 = tan(Tω1) ω1 = cot(Tω1) ANSWER DOWNLOAD EXAMIANS APP
Control Systems When writing a transfer function which of the following loops are not valid loops? Self loops at output node. Both 1 and 2. Neither 1 nor 2. Self loops at input node. Self loops at output node. Both 1 and 2. Neither 1 nor 2. Self loops at input node. ANSWER DOWNLOAD EXAMIANS APP
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