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Control Systems

Control Systems
Resonant peak of a marginally stable system is

 finite value
 0
 infinite
 any of the above

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Control Systems
A second order system has peak over shoot = 50% and period of oscillations 0.2 seconds. Find the resonant frequency?

 31.41 rad/s
 32.16 rad/s
 30.63 rad/s
 29.74 ra/s

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Control Systems
The impulse response of an initally relaxed linear system is e-2tu(t). To produce a response of te-2tu(t), the input must be equal to

 e-tu(t).
 e-2tu(t).
 2e-tu(t).
 (0.5)e-2tu(t).

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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(s+1)
 1/(s+1)
 s/(s+1)

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

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

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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
 1
 0
 3

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