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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
A second order under damped system has damping ratio of 0.3. Find the phase margin of the system?

 20°
 60°
 30°
 3°

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Control Systems
The open loop transfer function of a unity feedback system is given by G(s) = 1/(s+2)². The closed loop transfer function will have poles at

 -2,-1
 -2,2
 -2,-2
 -2+j,-2-j

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Control Systems
A proportional plus integral controller

 has high sensitivity
 both 2 and 3
 it increases rise time
 increases the stability of the system

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Control Systems
What will be the type of the system, if the steady state performance of control system yields a non zero finite value of the velocity error constant?

 type - 2
 type - 1
 type - 0
 type - 3

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Control Systems
Error constants of a system are a measure of

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

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