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Control Systems

Control Systems
The error of a system to a ramp input is 1/5, if the type of the system is decreased by one, then the error of unit step input is

 5
 0.2
 0.167
 6/5

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Control Systems
At which frequency does the Bode magnitude plots for the functions K/S2 have gain crossover frequency

 ω = √K rad/sec.
 ω = 0 rad/sec.
 ω = K rad/sec.
 ω = K2 rad/sec.

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Control Systems
Time taken by the response to reach and stay within a specified error is called

 Raise time.
 Peak overshoot.
 Settling time.
 Peak time.

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Control Systems
The impulse response of a system is c(t) = -te-t + 2 e-t (t>0). Its closed loop transfer function is

 (2s+1)/s²
 (2s+1)/(s+1)²
 (2s+2)/(s+1)²
 (2s+2)/s²

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Control Systems
Which of the following is/are represents the lead compensator?

 (s+2)/(s+5)
 (s+2)/(s+1)
 both 2 and 3
 (s+5)/(s+6)

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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'?

 3
 0
 1
 2

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