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Control Systems

Control Systems
The error of a system to a ramp input is 1/5, if the type of the system is decreased by one, then the error of unit step input is

 5
 6/5
 0.167
 0.2

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

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

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

 finite constant.
 indeterminate.
 infinite.
 zero.

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Control Systems
The phase of lead compensator of the system G ( s ) = ( s + a ) / ( s + b ) is at its maximum at:

 √( a / b).
  a / b.
  √( ab ).
  ab.

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Control Systems
If two blocks having gains A and B respectively are in parallel connection, find the resultant gain using block diagram reduction technique?

 A+B
 A/B
 2(A+B)
 A*B

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Control Systems
The transfer function of a linear time invariant system is given as G(s) = 10/(s² + 10s + 10). The steady state value of the output of the system for step input applied at time instant t=2 sec will be

 1
 infinity
 0
 undefined

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