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Control Systems

Control Systems
The characteristic equation of a feedback control is 2s4 + s3 + 3s2 + 5s + 10 = 0. The no of roots in the right half of the s-plane is

 0.
 4.
 2.
 3.

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

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

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Control Systems
Time taken by the response to reach and stay within a specified error is called

 Peak overshoot.
 Raise time.
 Peak time.
 Settling time.

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Control Systems
For the polynomial , number of roots which lie in the right half of s-plane is

 2
 4
 1
 3

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Control Systems
What is the type of closed loop system for the plant transfer function G(s) = k/s²(1+Ts) and with unity feedback?

 0
 2
 1
 3

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Control Systems
Given a unity feedback system with G(s) = k/s(s+4), the value of k for damping ratio of 0.5 is

 1
 4
 16
 64

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