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Control Systems

Control Systems
The characteristic equation for closed loop system is given as . The value of k for which the system becomes just stable is

 2
 8
 6
 4

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

 lag-lead
 lag
 lead-lag
 lead

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Control Systems
At which frequency does the Bode magnitude plots for the functions K/S2 have gain crossover frequency

 ω = √K rad/sec.
 ω = K2 rad/sec.
 ω = K rad/sec.
 ω = 0 rad/sec.

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Control Systems
Consider a network function H(s) = 2(s+3)/{(s+2)(s+4)}. What is the steady state response due to step input?

 3/4
 1
 4/3
 1/2

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Control Systems
Error at corner frequency ωcf of first order control system is -------

 ±1 db
 ±2 db
 ±3 db
 ±4 db

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Control Systems
A control system has open loop transfer function . Break away point is lies between

 0 and -4.
 0 and 4.
 any of the above.
 -4 and -6.

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