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Control Systems

Control Systems
Slope of asymptote in Bode plot of 2nd order system is _____________________ per octave.

 12 dB
 6 dB
 18 dB
 3 dB

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Control Systems
Which of the following statement is/are true statements?

 The steady state analysis depends on type of the system
 Type of the system is obtained from open loop transfer function
All of these
 Transient state analysis depends on order of the system

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Control Systems
What is the open loop DC gain of a unity feedback control system having closed loop transfer function as

 4/9
 13/4
 4/13
 9/4

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Control Systems
Sparking between the contacts can be reduced by inserting

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

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Control Systems
To achieve the optimum transient response, the indicating instruments are so designed as to

 be critically damped.
 be undamped.
 provide damping which is slightly more than the critical value.
 provide damping which is slightly less than the critical value.

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Control Systems
The unit step response of the system is 1 - e-t(1+t). Which is the system?

 critically stable
 stable
 oscillatory
 unstable

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