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Control Systems

Control Systems
For the polynomial , find the number of roots which lie on the right half of s-plane?

 4
 0
 1
 2

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Control Systems
Weighting function is in terms of -----------------

 Laplace transform of the impulse response
 Laplace transform of the step response
 Laplace transform of the ramp response
 Laplace transform of the parabolic response

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Control Systems
The impulse response of an initally relaxed linear system is e-2tu(t). To produce a response of te-2tu(t), the input must be equal to

 e-tu(t).
 2e-tu(t).
 (0.5)e-2tu(t).
 e-2tu(t).

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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?

 2 sec
 6 sec
 5 sec
 4 sec

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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

 3.
 4.
 2.
 0.

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Control Systems
The step response of the system described by the differential equation will be

 e6t.
 non of above.
 (1/6)*(1-e-6t).
 e-3t u(t).

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