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Control Systems

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

 20.
 40.
 0.
 infinity.

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Control Systems
The magnitude of a transfer function G(jω)H(jω) at gain cross over frequency is

 infinity
 any of the above
 0
 1

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Control Systems
Force balancing equation of a dash-pot element is (where, x = displacement)

 B *x
 B d2x/dt2
 B dx/dt
None of these

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

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

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

 e5s.
 e-5s.
 1/(s+5).
 1/(s-5).

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Control Systems
The transfer function of a system is 10/(1 + S) when operated as a unity feedback system, the steady state error to a unit step input will be

 ¾.
 Zero.
 1/11.
 10.

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