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Control Systems

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

 None of them.
 Zero.
 Infinite.
 One.

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Control Systems
A lead compensator used for a closed loop controller has the following transfer function For such a lead compensator

 b < a.
 a < b.
 a > kb.
 a < kb.

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Control Systems
Given the Laplace transform of f(t) = F(s), the Laplace transform of (f(t)e-at) is equal to

 F(s)/(s+a)
 eas*F(s)
 e-as*F(s)
 F(s+a)

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Control Systems
The amplitude spectrum of a Gaussian pulse is

 A sine function.
 Uniform.
 Impulse function.
 Gaussian.

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Control Systems
Lowest critical frequency is due to zero and it may be present at the origin or nearer to the origin, then the type of network is

 RLC circuit.
 RC circuit.
 LC circuit.
 RL Circuit.

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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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