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 A system is stable for (where GM = Gain Margin and PM = Phase Margin): GM and PM both -ve. GM -ve. PM - ve. GM and PM both +ve. GM and PM both -ve. GM -ve. PM - ve. GM and PM both +ve. ANSWER DOWNLOAD EXAMIANS APP
Control Systems Number of roots in left hand half of s plane if characteristic equation is s3 - 4s2 + s + 6 = 0 ? 1. 2. 3. 0. 1. 2. 3. 0. ANSWER DOWNLOAD EXAMIANS APP
Control Systems The characteristic equation has the following roots for over damped stable system? -2±j4 -2,-2 -2,-4 -2,2 -2±j4 -2,-2 -2,-4 -2,2 ANSWER DOWNLOAD EXAMIANS APP
Control Systems If the bandwidth of the system is very large, the system response is independent of bandwidth None of these slower faster independent of bandwidth None of these slower faster ANSWER DOWNLOAD EXAMIANS APP
Control Systems The unit impulse response of second order system is 1/6 * e-0.8t sin(0.6t). THen the natural frequency is 0.8 rad/s 1 rad/s 0.6 rad/s 2 rad/s 0.8 rad/s 1 rad/s 0.6 rad/s 2 rad/s ANSWER DOWNLOAD EXAMIANS APP
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