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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
The transfer function of a system given by The system is

 unstable.
 a critically damped.
 an under damped.
 an over damped.

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Control Systems
The impulse response of a system is c(t) = -te-t + 2 e-t (t>0). Its open loop transfer function is

 (2s+2)/(s+1)²
 (2s+2)/s²
 (2s+1)/s²
 (2s+1)/(s+1)²

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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.
  none of these.
  always bounded.

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Control Systems
The compensator would provide a maximum phase shift of

 20o.
 45o.
 30o.
 60o.

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

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

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