Virtual Labs

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Theory

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Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Contributors

Feedback

BODE PLOT

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Intermediate

Advanced

In a 4th order all pole system, what is the slope at high frequencies?

a: -80dB/decade Explanation

Explanation

b: -40dB/decade Explanation

Explanation

c: 40dB/decade Explanation

Explanation

d: 80dB/decade Explanation

Explanation

The value of phase of G(jw) at gain crossover frequency is -125 degrees. The phase margin is

a: -125 degrees Explanation

Explanation

b: 125 degrees Explanation

Explanation

c: 55 degrees Explanation

Explanation

d: -55 degrees Explanation

Explanation

In a bode plot, phase cross-over comes after gain cross-over, the system is

a: Unstable Explanation

Explanation

b: Marginally Stable Explanation

Explanation

c: Cannot be determined Explanation

Explanation

d: Stable Explanation

Explanation

The system is stable when

a: Gain Margin > 0 and Phase Margin < 0 Explanation

Explanation

b: Gain Margin > 0 and Phase Margin > 0 Explanation

Explanation

c: Gain Margin < 0 and Phase Margin < 0 Explanation

Explanation

d: Gain Margin < 0 and Phase Margin > 0 Explanation

Explanation

A system consists of two zeroes and four poles, the slope at high frequencies is

a: -40 dB/decade Explanation

Explanation

b: -80 dB/decade Explanation

Explanation

c: -20 dB/decade Explanation

Explanation

d: None of the above Explanation

Explanation

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