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Control Systems

Control Systems
For the polynomial , find the number of roots which lie on the right half of s-plane?

 1
 0
 4
 2

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Control Systems
A second order control system has a transfer function 16/(s² + 4s + 16). Find the settling time for 2% tolerance?

 4 sec
 5 sec
 2 sec
 10 sec

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Control Systems
Two identical first order systems have been cascaded non interactively. The unit step response of the systems will be

 under damped
 critical damped
 un damped
 Over damped

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Control Systems
A transfer function has a zero at s = -1 and poles at s = -1 ± j1. The multiplier being unity, if the input is step function, the steady state response is given by

 2∠90°
 0.5∠0°
 1∠0°
 0.5∠10°

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Control Systems
A second order control system has a transfer function 16/(s² + 4s + 16). What is the time for the first overshoot?

 π/√3 sec
 2π/√3 sec
 π/4√3 sec
 π/2√3 sec

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Control Systems
Accurate and reliable output is possible with which of the following system?

 Both 1 and 2
 Closed loop control system
 Open loop control system
None of these

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