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Control Systems

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

 -2,2
 -2±j4
 -2,-4
 -2,-2

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Control Systems
Time response for a second order system depends on value of ξ. If ξ = 1 then the system is called as

 under damped system.
 over damped system.
 undamped system.
 critically damped system.

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Control Systems
When the input to a system was with drawn at t = 0, its output was found to decrease exponentially from 1000 units to 500 units in 1.386 sec. The time constant of the system is

 0.500.
 2.000.
 1.386.
 0.693.

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Control Systems
The value of 'a' in to give phase margin = 45o will be

 0.707.
 0.9.
 1.414.
 1.18.

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Control Systems
Poles and zeros are arranged alternatively on negative real axis, then type of network is/are

 LC network.
 RL network.
 Both 2 and 3.
 RC network.

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Control Systems
For a lead compensator, the poles lie:

  on origin.
  on LHS before zero.
  on RHS.
  on LHS.

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