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Control Systems

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

 infinity.
 20.
 0.
 40.

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Control Systems
The impulse response of a system is c(t) = -te-t + 2 e-t (t>0). Its closed loop transfer function is

 (2s+1)/s²
 (2s+1)/(s+1)²
 (2s+2)/(s+1)²
 (2s+2)/s²

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Control Systems
Find the angles of asymptotes of the open loop transfer function G(s) = k(s + 1)/((s(s+2)(s+4)?

 60°,240°
 90°,270°
 90°,180°
 0°, 180°

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

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

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Control Systems
A control system has open loop transfer function G(s) = k/(s(s + 2). Find the break away point?

 2
 -1
 1
 -2

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Control Systems
Find the Laplace transform for sinωt?

 s/(s²+ω²)
 1/s²
 ω/(s²+ω²)
 1/s

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