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Control Systems

Control Systems
Find the Laplace transform for sinωt?

 ω/(s²+ω²)
 s/(s²+ω²)
 1/s²
 1/s

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Control Systems
Electrical analogous quantity for dash-pot in force-current analogy is

 inductance.
 resistance.
 conductance.
 capacitance.

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Control Systems
Type and order of transfer function G (s) = K / {s(s + 2)}

 2, 1.
 0, 2.
 1, 1.
 1, 2.

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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+a)
 e-as*F(s)
 F(s)/(s+a)
 eas*F(s)

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Control Systems
The open loop transfer function of a unity feedback control system is G(s) = 1/((s(s+0.1s)(s+1)). The value of damping factor for which the resonant peek is equal to 1.4 is

 0.386
 0.707
 0.953
 0.263

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Control Systems
A transfer function has a zero at s = -1 and poles at s = -1 ± j1. The multiplier being unity, if the input is step function, the steady state response is given by

 0.5∠0°
 0.5∠10°
 1∠0°
 2∠90°

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