If the characteristic equation of the closed loop system is s^2 + 2s + 2 = 0, then the system is:

Electronics and Communication Engineering (ECE) : Automatic Control Systems - Quiz(MCQ)

Underdamped

Undamped

Over damped

Critically damped

Correct Answer : Option (A) : Underdamped

Explanation : The given equation is: s^2 + 2s + 2 = 0

It is a second-order differential equation. The Laplace transform of a standard form of a second-order differential equation is:

Thus, the system is underdamped.

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For a quadratic factor in denominator of transfer function the phase angle at corner frequency (in Bode phase angle plot)

is +90Â°

is -90Â°

depends on the damping factor

None of the above

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The response to sinusoidal excitation can be found by

setting s = jÏ‰ in the network function

setting s = -jÏ‰ in the network function

taking inverse transform of network function

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The resolution of a wire wound potentiometer is about

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