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Control Systems

Control Systems
Find the Laplace transform for sinωt?

 1/s
 s/(s²+ω²)
 1/s²
 ω/(s²+ω²)

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

 Capacitor.
 Inductor.
 Resistor.
 Both A and B.

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Control Systems
The second order system defined by 25/(s2 + 5s + 25) is given a step input. The time taken for the output to settle with in 2 % of input is

 1.6 sec.
 2 sec.
 1.2 sec.
 0.4 sec.

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Control Systems
The open loop transfer function of a unity feedback control system is given by G(s) = k/s(s+1). If the gain k is increased to infinity, then damping ratio will tend to become

 unity
 0.707
 zero
 infinite

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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?

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

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Control Systems
The transfer function of a system is 10/(1 + S) when operated as a unity feedback system, the steady state error to a unit step input will be

 ¾.
 Zero.
 1/11.
 10.

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