Control Systems The graph of an electrical network has N nodes and B branches. The number of links, L with respect to the choice of a tree, is given by N - B + 1. B + N. B - N + 1. N - 2B - 1. N - B + 1. B + N. B - N + 1. N - 2B - 1. 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 The transfer function of a linear time invariant system is given as G(s) = 10/(s² + 10s + 10). The steady state value of the output of the system for step input applied at time instant t=2 sec will be 0 1 undefined infinity 0 1 undefined infinity ANSWER DOWNLOAD EXAMIANS APP
Control Systems The phase margin of a system having the loop transfer function G(s)H(s) = 2√3/s(s+1) is 30° 60° 45° 80° 30° 60° 45° 80° ANSWER DOWNLOAD EXAMIANS APP
Control Systems Find the angles of asymptotes of the open loop transfer function G(s) = k(s + 1)/((s(s+2)(s+4)? 60°,240° 0°, 180° 90°,270° 90°,180° 60°,240° 0°, 180° 90°,270° 90°,180° ANSWER DOWNLOAD EXAMIANS APP
Control Systems A system is stable for (where GM = Gain Margin and PM = Phase Margin): GM and PM both +ve. PM - ve. GM -ve. GM and PM both -ve. GM and PM both +ve. PM - ve. GM -ve. GM and PM both -ve. ANSWER DOWNLOAD EXAMIANS APP
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