The transfer function of a system is given as 81/ (s^2 + 16s + 81). Find the undamped natural frequency, damping ratio, and peak time for a unit step input.

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

9, 0.889, 0.762

9, 0.559, 0.762

9, 0.889, 0.187

9, 0.667, 0.187

Correct Answer : Option (A) : 9, 0.889, 0.762

Recently Updated in Automatic Control Systems Questions

Q .

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

is +90°

is -90°

depends on the damping factor

None of the above

Correct Answer : Option (B) : is -90°

Q .

The response to sinusoidal excitation can be found by

setting s = jω in the network function

setting s = -jω in the network function

taking inverse transform of network function

None of the above

Correct Answer : Option (A) : setting s = jω in the network function

Q .

The resolution of a wire wound potentiometer is about

0.1%

0.001%

Correct Answer : Option (C) : 0.1%

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