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Control Systems

Control Systems
Error at corner frequency ωcf of first order control system is -------

 ±3 db
 ±4 db
 ±2 db
 ±1 db

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

 outgoing branches
None of these
 both 1 and 2
 incoming branches

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Control Systems
What is the type of closed loop system for the plant transfer function G(s) = k/s²(1+Ts) and with unity feedback?

 3
 0
 2
 1

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Control Systems
Find the type of the system given by

 4.
 1.
 2.
 3.

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Control Systems
If the magnitude of G(jω)H(jω) at phase crossover frequency is 0.5. Find the gain margin of the given system?

 0.5
 2
 1
 4

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

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