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Control Systems

Control Systems
The system having characteristic equation is used to be an oscillator. What is the value of k?

 1
 4
 3
 2

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Control Systems
Given the transfer function of a system. Which of the following characteristics does it have?

 Under damped
 Over damped
 any of the above
 Critical damped

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

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

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Control Systems
Sparking between the contacts can be reduced by inserting

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

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Control Systems
First Foster form of a LC network represents which element in the beginning?

 Resistor.
 Both A and B.
 Inductor.
 Capacitor.

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Control Systems
A open loop transfer function is given as G(s) = (s+2)/(s+1)(s-1). Find the number of encirclements about '-1+j0'?

 2
 3
 1
 0

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