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Control Systems

Control Systems
A control system has open loop transfer function G(s) = k/(s(s + 2). Find the break away point?

 1
 -2
 2
 -1

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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
 2 rad/s
 1 rad/s
 0.8 rad/s

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Control Systems
Force balancing equation of a mass element is (where, x = displacement)

 M d2x/dt2
 any of the above
 M *x
 M dx/dt

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Control Systems
In the cauer-2 form of LC network---------is series element and --------is shunt element respectively?

 L and C
 L and L
 C and C
 C and L

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Control Systems
The Laplace transform of a transportation lag of 5 seconds is

 1/(s+5).
 e-5s.
 e5s.
 1/(s-5).

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Control Systems
A function y (t) satisfies the following differential equation : Where, δ (t) is the delta function. Assuming zero initial condition and denoting the unit step function by u(t), y(t) can be formed as

 e-t.
 e-tu(t).
 et.
 etu(t).

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