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Control Systems

Control Systems
Slope of asymptote in Bode plot of 2nd order system is _____________________ per octave.

 12 dB
 18 dB
 3 dB
 6 dB

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Control Systems
A control system has open loop transfer function . Break away point is lies between

 any of the above.
 0 and 4.
 0 and -4.
 -4 and -6.

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Control Systems
What is the order of a closed loop control system for a plant with a transfer function equal to G(s) = k/s²(1+Ts) and with unity feedback

 2
 0
 3
 1

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Control Systems
The characteristic equation has the following roots for over damped stable system?

 -2,-4
 -2,2
 -2,-2
 -2±j4

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Control Systems
Which of the following is/are the disadvantages of an open loop control system?

 Unreliable.
 both 1 and 2.
 Inaccurate.
None of these

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Control Systems
In which of the following controller band width is increased?

 proportional plus integral controller
 both 1 and 2
 proportional plus derivative controller
 nether 1 nor 2

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