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Control Systems

Control Systems
A open loop transfer function is given as G(s) = (s+2)/(s+1)(s-1). Find the number of encirclements about '-1+j0'?

 0
 3
 2
 1

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

 0.
 1.
 infinity.
 1/6.

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

 50.
 infinity.
 10.
 0.

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Control Systems
The Laplace transform of a transportation lag of 5 seconds is

 1/(s-5).
 e-5s.
 1/(s+5).
 e5s.

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Control Systems
Angle condition for complimentary root locus or inverse root locus is

 ± (2q + 1) 360°
 ± (2q) 180°
 ± (2q) 360°
 ± (2q + 1) 180°

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Control Systems
If the bandwidth of the system is very large, the system response is

 slower
 independent of bandwidth
None of these
 faster

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