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Control Systems

Control Systems
Resonant peak of a marginally stable system is

 finite value
 0
 any of the above
 infinite

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Control Systems
If two blocks having gains A and B respectively are in parallel connection, find the resultant gain using block diagram reduction technique?

 2(A+B)
 A*B
 A/B
 A+B

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

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Control Systems
Let P = Number of open loop poles and Z = Number of open loop zeros and P > Z, find the number of branches terminating at ∞?

 Any of the above
 P - Z
 P
 Z

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Control Systems
The unit step error coefficient of a system with unity feedback is

 infinity.
 1/6.
 1.
 0.

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Control Systems
A first order control system is initially at 0 V and subjected to a sudden input at t=0. Its output reaches 1.1 V in 4 sec and eventually reaches steady state of 2 V. Find the time constant?

 4 sec
 6 sec
 5 sec
 2 sec

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