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Control Systems

Control Systems
The unit step response of the system is 1 - e-t(1+t). Which is the system?

 oscillatory
 critically stable
 unstable
 stable

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Control Systems
The type of a control system is obtained from -------------- transfer function?

 open loop
 both open loop and closed loop
 closed loop
 none of above.

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Control Systems
Find the corner frequency for the following transfer function? G(s) = 1/(s+2)

 4 rad/s
 1/2 rad/s
 2 rad/s
 1/4 rad/s

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Control Systems
When the polynomial is Routh Hurwitz,

 the function is not real.
 all zeroes lie in the right half of the s-plane.
 the roots of function have real parts which are to be zero/negative.
 none of these.

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Control Systems
Poles and zeros are arranged alternatively on negative real axis, then type of network is/are

 RC network.
 RL network.
 LC network.
 Both 2 and 3.

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Control Systems
The position and velocity error coefficient for the transfer function given below are respectively

 0 and infinity.
 0 and 0.
 50 and 0.
 50 and infinity.

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