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Control Systems

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

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

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Control Systems
Number of roots in left hand half of s plane if characteristic equation is s3 - 4s2 + s + 6 = 0 ?

 2.
 0.
 3.
 1.

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Control Systems
Lead network is used to

 both A and C.
 improve transient response.
 increase bandwidth.
 improve steady state response.

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

 elastic.
 homogeneous.
 isotropic.
 none of them.

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Control Systems
The magnitude condition for root locus is ..................

 |G(s)H(s)| = ∞
 |G(s)H(s)| = 2
 |G(s)H(s)| = 1
 |G(s)H(s)| = 0

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Control Systems
A proportional plus integral controller

 both 2 and 3
 it increases rise time
 has high sensitivity
 increases the stability of the system

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