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Control Systems

Control Systems
For type 1 system with parabolic input, the steady state error is

 indeterminate.
 finite constant.
 zero.
 infinite.

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Control Systems
A proportional plus integral controller

 increases the stability of the system
 has high sensitivity
 both 2 and 3
 it increases rise time

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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°
 0°, 180°
 90°,180°

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Control Systems
A second order system has peak over shoot = 50% and period of oscillations 0.2 seconds. Find the resonant frequency?

 30.63 rad/s
 29.74 ra/s
 31.41 rad/s
 32.16 rad/s

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Control Systems
What is the open loop DC gain of a unity feedback control system having closed loop transfer function as

 13/4
 4/13
 9/4
 4/9

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Control Systems
The input-output relationship of a linear time invariant continuous time system is given by r(t) = d²c(t)/dt² + 3 dc(t)/dt + 2 c(t) Where r(t) and c(t) are input and output respectively. What is the transfer function of the system equal to?

 1/(s² + s + 2)
 2/(s² + s + 2)
 2/(s² + 3s + 2)
 1/(s² + 3s + 2)

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