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Control Systems

Control Systems
The following transfer function represents a phase-lead compensator?

 (s+4)/(s+6)
 (s+4)/(3s+6)
 1/s
 (4s+2)/(6s+1)

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Control Systems
Adding a pole to a system transfer function in terms of compensator represents a --------------- compensator ?

 lead
 lag-lead
 lag
 lead-lag

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

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

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Control Systems
The characteristic equation of a control system is given below: The system is

 stable
 critical stable
 unstable
 marginally stable

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Control Systems
A unity feedback control system has an open loop transfer function G(s) = k/(s(s² + 7s + 12) The gain k for which s = -1 + j1 will lie on the root locus of the system is

 10
 4
 5
 6.5

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Control Systems
Error constants of a system are a measure of

 relative stability.
 steady state response.
 transient state response.
 steady state response as well as transient state response.

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