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Control Systems

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
The low frequency and high frequency asymptotes of Bode magnitude plot are respectively -60dB/decade and -40dB/decade. What is the type of the system?

 TYPE II
 TYPE I
 TYPE 0
 TYPE III

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Control Systems
Force balancing equation of a dash-pot element is (where, x = displacement)

 B *x
 B dx/dt
None of these
 B d2x/dt2

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Control Systems
Which of the following are the disadvantages of a closed loop control system?

 Reduces the overall gain.
 Complex and costly.
All of these
 Oscillatory response.

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Control Systems
The value of 'a' in to give phase margin = 45o will be

 1.414.
 1.18.
 0.707.
 0.9.

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Control Systems
The system is initially critical damped. If the gain of the system is doubled, then it will exhibit

 under damped characteristics.
 over damped characteristics.
 undamped characteristics.
 critical damped characteristics.

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