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Control Systems

Control Systems
Angle of asymptotes for complimentary root locus is

 (2q)*180/(P-Z)
 (2q+1)*180/P
 (2q+1)*180/(P-Z)
 (2q)*180/P

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

 20.
 infinity.
 0.
 40.

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

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

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Control Systems
Error constants of a system are a measure of

 transient state response.
 steady state response.
 relative stability.
 steady state response as well as transient state response.

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Control Systems
Force balancing equation for elastic element (K) is (where, x = displacement)

None of these
 K d2x/dt2
 K dx/dt
 K *x

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Control Systems
The input-output relationship of a linear time invariant continuous time system is given by r(t) = d²c(t)/dt² + 3 dc(t)/dt + 2 c(t) Where r(t) and c(t) are input and output respectively. What is the transfer function of the system equal to?

 2/(s² + s + 2)
 1/(s² + 3s + 2)
 1/(s² + s + 2)
 2/(s² + 3s + 2)

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