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Control Systems

Control Systems
Which of the following is the electrical analogous element for displacement in force-voltage analogy?

 Flux.
 Charge.
 Current.
 Voltage.

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Control Systems
The unit impulse response of second order system is 1/6 * e-0.8t sin(0.6t). THen the natural frequency is

 0.6 rad/s
 1 rad/s
 2 rad/s
 0.8 rad/s

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Control Systems
When the polynomial is Routh Hurwitz,

 the roots of function have real parts which are to be zero/negative.
 the function is not real.
 all zeroes lie in the right half of the s-plane.
 none of these.

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Control Systems
Number of roots in left hand half of s plane if characteristic equation is s3 - 4s2 + s + 6 = 0 ?

 1.
 3.
 0.
 2.

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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

 4.
 0.
 3.
 2.

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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 ∞?

 Z
 P
 Any of the above
 P - Z

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