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Control Systems

Control Systems
What is the order of a closed loop control system for a plant with a transfer function equal to G(s) = k/s²(1+Ts) and with unity feedback

 3
 0
 2
 1

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Control Systems
Consider the function F(s) = ω/(s²+ω²). Where F(s) = Laplace transform of f(t). The final value of f(t) is equal to

 finite constant
 infinite
 zero
 a value between -1 and +1

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Control Systems
Angle of asymptotes for complimentary root locus is

 (2q+1)*180/P
 (2q)*180/(P-Z)
 (2q+1)*180/(P-Z)
 (2q)*180/P

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Control Systems
Consider the following statements for phase lead compensation:

 The maximum phase lag occurs at the arithmetic mean of the two corner frequencies.
 nether 1 nor 2
 Phase lead compensation shifts the gain crossover frequency to the right
 both 1 and 2

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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

 0.263
 0.953
 0.707
 0.386

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Control Systems
The maximum phase lag occurs at the ------------------- of the two corner frequencies?

 arithmetic mean
None of these
 either 1 or 2
 geometric mean

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