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Control Systems

Control Systems
The value of gain margin of the system having G ( s )H ( s ) = 8 / ( s + 2 )3 is

 2.
 6.
 4.
  8.

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Control Systems
A first order control system is initially at 0 V and subjected to a sudden input at t=0. Its output reaches 1.1 V in 4 sec and eventually reaches steady state of 2 V. Find the time constant?

 6 sec
 2 sec
 5 sec
 4 sec

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Control Systems
The second order system defined by 25/(s2 + 5s + 25) is given a step input. The time taken for the output to settle with in 2 % of input is

 2 sec.
 1.2 sec.
 1.6 sec.
 0.4 sec.

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Control Systems
For a unity feedback control system open loop transfer function then acceleration error constant is

 20.
 50.
 infinity.
 0.

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Control Systems
Find the type of the system given by

 4.
 1.
 3.
 2.

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

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

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