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Control Systems

Control Systems
What is the order of a closed loop control system for a plant with a transfer function equal to G(s) = k/s²(1+Ts) and with unity feedback

 2
 3
 0
 1

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Control Systems
Sparking between the contacts can be reduced by inserting

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

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Control Systems
Resonant peak of a marginally stable system is

 finite value
 0
 any of the above
 infinite

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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
 A/B
 2(A+B)

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Control Systems
The closed loop transfer function of a system is 25/(s² + 25). The settling time of the system is

 25 sec
 5 sec
 1 sec
 ∞ sec

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Control Systems
By using which of the following elements, mechanical translational systems are obtained?

 spring element
 mass element
 dash-pot
All of these

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