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Control Systems

Control Systems
If a body has identical properties all over, it is known as

 homogeneous.
 elastic.
 none of them.
 isotropic.

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Control Systems
None of the poles of a linear control system lie in the right half of s plane. For a bounded input, the output of this system

  could be unbounded.
  tends to zero.
  always bounded.
  none of these.

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Control Systems
The unit step error coefficient of a system with unity feedback is

 infinity.
 1/6.
 1.
 0.

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Control Systems
Which of the following controller has sluggish response?

 proportional controller
 both 2 and 3
 derivative controller
 integral controller

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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
 4 sec
 5 sec

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Control Systems
When writing a transfer function which of the following loops are not valid loops?

 Both 1 and 2.
 Neither 1 nor 2.
 Self loops at output node.
 Self loops at input node.

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