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Control Systems

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

 C and L
 L and C
 L and L
 C and C

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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?

 6 sec
 5 sec
 4 sec
 2 sec

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

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

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Control Systems
The graph of an electrical network has N nodes and B branches. The number of links, L with respect to the choice of a tree, is given by

  B - N + 1.
 N - B + 1.
 B + N.
 N - 2B - 1.

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Control Systems
The characteristic equation has the following roots for over damped stable system?

 -2,-2
 -2,2
 -2±j4
 -2,-4

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Control Systems
When the system gain is doubled the gain margin becomes?

 1/2 times
 Remains unaffected
 2 times
None of these

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