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Control Systems

Control Systems
Angle of asymptotes for complimentary root locus is

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

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Control Systems
A proportional plus derivative controller

 has high sensitivity
 improves the steady state accuracy
 both 1 and 2
 increases the stability of the system

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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
Advantages of open loop control system is/are

All of these
 reliable.
 accurate.
 simple and economical.

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Control Systems
Time taken for the response to rise from zero to 100 % for very first time is called

 Peak time.
 Settling time.
 Rise time.
 Delay time.

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Control Systems
The poles of the second order system are at -3 ± j4. The damping ratio of the system is

 3/7
 3/5
 4/5
 3/4

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