Simulation of Control Systems 
1. When the Nyquist plot does not intersect the negative real axis at any finite nonzero frequency, the gain margin is ____
2. In a unit-step response of the closed loop system, high bandwidth corresponds to a
3. Adding a pole to the forward-path transfer function makes the closed loop system
4. In Bode diagrams,frequency ratios are expressed in terms of octaves or decades. An octave is a frequency band from ____ ω1 to _______ ω1, where ω1 is any frequency value.
5. In a bode magnitude plot, which one of the following slopes would be exhibited at high frequencies by a 4th order all-pole system?
6. Open loop transfer function contains one zero in right half of s-plane then
7. consider that the loop transfer function of a control system is
The following results are obtained from the Nyquist plot
Gain crossover frequency = 6.22 rad/sec
Phase crossover frequency = 15.88 rad/sec. Find the gain margin.
The following results are obtained from the Nyquist plot
Gain crossover frequency = 6.22 rad/sec
Phase crossover frequency = 15.88 rad/sec. Find the gain margin.
8. When the Nyquist plot of L(jw) passes through the (-1, jO) point, the gain margin is
9. If a Nyquist plot of G (jω) H (jω) for a closed loop system passes through (-2, j0) point in GH plane, what would be the value of gain margin of the system in dB ?
10. Which of the following statement is correct ?