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Control Systems

Control Systems
Electrical analogous quantity for spring element (K) in force-voltage analogy is

 L
 1/C
 R
 C

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Control Systems
The Laplace transformation of f(t) is F(S) given the final value of f(t) is

 One.
 Zero.
 Infinite.
 None of them.

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Control Systems
Resonant peak of a marginally stable system is

 finite value
 any of the above
 0
 infinite

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Control Systems
The low frequency and high frequency asymptotes of Bode magnitude plot are respectively -60dB/decade and -40dB/decade. What is the type of the system?

 TYPE 0
 TYPE III
 TYPE II
 TYPE I

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Control Systems
A second order under damped system has damping ratio of 0.3. Find the phase margin of the system?

 30°
 20°
 60°
 3°

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Control Systems
The open loop transfer function of a unity feedback control system is given by G(s) = k/s(s+1). If gain k is increased to infinity, then damping ratio will tend to become

 infinite
 zero
 0.707
 unity

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