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Control Systems

Control Systems
The type number of the control system with G(s) = k(s+2)/(s(s²+2s+3) is

 3
 2
 0
 1

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Control Systems
A second order control system is defined by the following equation: 4 d²c(t)/dt² + 8 dc(t)/dt + 16 c(t) = 16 u(t) The damping ratio and natural frequency for this system are respectively

 0.50 and 4 rad/s
 0.25 and 4 rad/s
 0.25 and 2 rad/s
 0.50 and 2 rad/s

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Control Systems
The transfer function of phase lead compensator is given by , where, T > 0, α < 0. What is the maximum phase shift provided by this compensator?

 cos-1((1 - α)/(1 + α)
 both 1 and 3
 sin-1((1 - α)/(1 + α)
 tan-1((1 - α)/(2√α)

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Control Systems
To achieve the optimum transient response, the indicating instruments are so designed as to

 provide damping which is slightly more than the critical value.
 be critically damped.
 provide damping which is slightly less than the critical value.
 be undamped.

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Control Systems
Advantages of open loop control system is/are

 accurate.
 simple and economical.
 reliable.
All of these

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Control Systems
The closed loop transfer function of a unity feedback control system is 9/(s² + 3s + 9), then the type of the system is

 3
 1
 2
 0

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