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Control Systems

Control Systems
The optimum values of damping ratio is --------------

 0.3 to 0.7
 0.3 to 5
 0 to 2
 0.9 to 1.1

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Control Systems
Consider a point S = -3 + j4 in the s-plane. Then for a system with the open loop transfer function ?

 S is not on root locus
 S is on root locus
 either 1 or 2
None of these

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Control Systems
A second order control system has a transfer function 16/(s² + 4s + 16). What is the time for the first overshoot?

 2π/√3 sec
 π/4√3 sec
 π/√3 sec
 π/2√3 sec

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Control Systems
By using which of the following elements, mechanical translational systems are obtained?

 dash-pot
 spring element
 mass element
All of these

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

 L
 C
 R
 1/C

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Control Systems
The impulse response of a system is c(t) = -te-t + 2 e-t (t>0). Its closed loop transfer function is

 (2s+2)/(s+1)²
 (2s+1)/s²
 (2s+1)/(s+1)²
 (2s+2)/s²

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