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Control Systems

Control Systems
Advantages of open loop control system is/are

 reliable.
All of these
 simple and economical.
 accurate.

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Control Systems
Time response for a second order system depends on the value of τ. If τ= 0 then the system is called as

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

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Control Systems
A proportional plus integral controller

 it increases rise time
 increases the stability of the system
 has high sensitivity
 both 2 and 3

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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

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

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Control Systems
A second order control system has a transfer function 16/(s² + 4s + 16). What is the time for the first overshoot?

 π/2√3 sec
 π/√3 sec
 2π/√3 sec
 π/4√3 sec

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Control Systems
The compensator would provide a maximum phase shift of

 30o.
 45o.
 20o.
 60o.

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