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Control Systems

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

 50.
 20.
 0.
 infinity.

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Control Systems
A proportional plus derivative controller

 both 1 and 2
 improves the steady state accuracy
 has high sensitivity
 increases the stability of the system

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Control Systems
The unit step response of the system is 1 - e-t(1+t). Which is the system?

 unstable
 oscillatory
 critically stable
 stable

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Control Systems
Which of the following controller has sluggish response?

 integral controller
 proportional controller
 derivative controller
 both 2 and 3

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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°
 0°, 180°
 90°,270°
 90°,180°

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Control Systems
Which of the following statement is/are true statements?

All of these
 The steady state analysis depends on type of the system
 Transient state analysis depends on order of the system
 Type of the system is obtained from open loop transfer function

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