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Control Systems

Control Systems
The unit step response of the system is 1 - e-t(1+t). Which is the system?

 critically stable
 unstable
 oscillatory
 stable

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Control Systems
The transfer function for tachometer E(S)/θ(S) is

 K
 K/S
 KS2
 KS

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Control Systems
The amplitude spectrum of a Gaussian pulse is

 Impulse function.
 Uniform.
 Gaussian.
 A sine function.

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Control Systems
The characteristic equation of a feedback control is 2s4 + s3 + 3s2 + 5s + 10 = 0. The no of roots in the right half of the s-plane is

 3.
 2.
 0.
 4.

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Control Systems
A second order control system is defined by the following equation: 4 d²c(t)/dt² + 8 dc(t)/dt + 16 c(t) = 16 u(t) The damping ratio and natural frequency for this system are respectively

 0.25 and 4 rad/s
 0.50 and 4 rad/s
 0.25 and 2 rad/s
 0.50 and 2 rad/s

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Control Systems
In the cauer-2 form of LC network---------is series element and --------is shunt element respectively?

 L and L
 L and C
 C and C
 C and L

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