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Control Systems

Control Systems
Force balancing equation for elastic element (K) is (where, x = displacement)

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

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Control Systems
The impulse response of a linear system is e-t, (t > 0). The corresponding transfer function is

 1/s
 1/(s+1)
 1/s(s+1)
 s/(s+1)

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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

 5 sec
 1 sec
 ∞ sec
 25 sec

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Control Systems
The poles of the second order system are at -3 ± j4. The damping ratio of the system is

 4/5
 3/7
 3/4
 3/5

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Control Systems
If the bandwidth of the system is very large, the system response is

 slower
 faster
 independent of bandwidth
None of these

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Control Systems
A negative feedback closed loop control system is supplied to an input of 5 volt. The system has a forward gain of 1 and a feedback gain of 1. What is the output voltage?

 2.0 Volt.
  1.0 Volt.
  2.5 Volt.
 1.5 Volt.

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