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Control Systems

Control Systems
The unit step error coefficient of a system with unity feedback is

 1.
 infinity.
 0.
 1/6.

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Control Systems
The transfer function of phase lead compensator is given by , where, T > 0, α < 0. What is the maximum phase shift provided by this compensator?

 cos-1((1 - α)/(1 + α)
 sin-1((1 - α)/(1 + α)
 tan-1((1 - α)/(2√α)
 both 1 and 3

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Control Systems
Lowest critical frequency is due to zero and it may be present at the origin or nearer to the origin, then the type of network is

 RL Circuit.
 RC circuit.
 RLC circuit.
 LC circuit.

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Control Systems
Transient state analysis deals with -------------

 both 1 and 2
 magnitude of error
None of these
 nature of response

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

 1
 4
 2
 0

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Control Systems
The open loop transfer function of non unity negative feedback system is , then the number of root locus branches equal to

 1.
 2.
 0.
 3.

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