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Control Systems

Control Systems
For the polynomial , find the number of roots which lie on the right half of s-plane?

 4
 1
 0
 2

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Control Systems
A linear time invariant system, initially at rest when subjected to a unit step input gave response c(t) = te-t (t ≥ 0). The transfer function of the system is

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

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Control Systems
Which of the following is/are the advantages of a closed loop control system?

 The closed loop systems are less affected by noise.
 nether 1 nor 2.
 both 1 and 2.
 The closed loop systems are accurate.

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Control Systems
The steady state error due to ramp input for a type two system is equal to

 zero.
 constant.
 non zero number.
 infinite.

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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
 0.386
 0.953
 0.707

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Control Systems
If a body has identical properties all over, it is known as

 elastic.
 none of them.
 isotropic.
 homogeneous.

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