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Control Systems
The unit impulse response of second order system is 1/6 * e-0.8t sin(0.6t). THen the natural frequency is
0.6 rad/s
1 rad/s
2 rad/s
0.8 rad/s
0.6 rad/s
1 rad/s
2 rad/s
0.8 rad/s
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Control Systems
Which of the following controller has sluggish response?
proportional controller
derivative controller
integral controller
both 2 and 3
proportional controller
derivative controller
integral controller
both 2 and 3
Answer
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Control Systems
For the polynomial , find the number of roots which lie on the right half of s-plane?
4
2
0
1
4
2
0
1
Answer
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Control Systems
Find the angles of asymptotes of the open loop transfer function G(s) = k(s + 1)/((s(s+2)(s+4)?
90°,270°
90°,180°
60°,240°
0°, 180°
90°,270°
90°,180°
60°,240°
0°, 180°
Answer
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Control Systems
Number of sign changes in the entries in 1st column of Routh array denotes the no. of
open loop poles in RHP.
zeroes of system in RHP.
open loop zeroes in RHP.
roots of characteristic polynomial in RHP.
open loop poles in RHP.
zeroes of system in RHP.
open loop zeroes in RHP.
roots of characteristic polynomial in RHP.
Answer
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Control Systems
Time response for a second order system depends on the value of τ. If τ= 0 then the system is called as
under damped system.
critically damped system.
undamped system.
over damped system.
under damped system.
critically damped system.
undamped system.
over damped system.
Answer
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