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Control Systems

Control Systems
For a unity feedback control system open loop transfer function then position error constant is

 40.
 20.
 0.
 infinity.

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Control Systems
The transfer function of a plant is T(s) = 5/(s+5)(s² + 5 + 1). The second order approximation of T(s) using dominant pole concept is

 5/(s+1)(s+5)
 1/(s² + 5 + 1)
 5/(s² + 5 + 1)
 1/(s+1)(s+5)

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Control Systems
In signal flow graph output node is node having only------------

 outgoing branches
None of these
 incoming branches
 both 1 and 2

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Control Systems
Time response for a second order system depends on value of ξ. If ξ = 1 then the system is called as

 undamped system.
 critically damped system.
 over damped system.
 under damped system.

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Control Systems
A control system has open loop transfer function . Break away point is lies between

 -4 and -6.
 any of the above.
 0 and -4.
 0 and 4.

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Control Systems
In signal flow graph input node is node having only------------

None of these
 incoming branches.
 both 1 and 2.
 outgoing branches.

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