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Control Systems

Control Systems
For a unity feedback control system open loop transfer function then velocity error constant is

 10.
 50.
 0.
 infinity.

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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

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

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

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

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Control Systems
For type 1 system with parabolic input, the steady state error is

 finite constant.
 infinite.
 indeterminate.
 zero.

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Control Systems
Advantages of open loop control system is/are

 simple and economical.
 accurate.
All of these
 reliable.

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Control Systems
Sparking between the contacts can be reduced by inserting

 a reactor in the line.
 a capacitor in series with the contacts.
  a capacitor in parallel with the contacts.
 a resistor in the line.

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