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Control Systems

Control Systems
If the magnitude of G(jω)H(jω) at phase crossover frequency is 0.5. Find the gain margin of the given system?

 4
 1
 0.5
 2

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Control Systems
The open loop transfer function of non unity negative feedback system is , then the number of root locus branches equal to

 2.
 0.
 1.
 3.

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Control Systems
Time taken for the response to rise from zero to 100 % for very first time is called

 Delay time.
 Settling time.
 Peak time.
 Rise time.

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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

 Over damped
 under damped
 critical damped
 un damped

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Control Systems
Time response for a second order control system depends on value of ξ. If ξ>1 then the system is called as

 undamped system .
 under damped system.
 over damped system.
 critically damped system.

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Control Systems
First Foster form of a LC network represents which element in the beginning?

 Inductor.
 Capacitor.
 Both A and B.
 Resistor.

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