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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?
5 sec
2 sec
6 sec
4 sec
5 sec
2 sec
6 sec
4 sec
Answer
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Related Question
Control Systems
The characteristic equation of a feedback control system is given by s³ + 5s² + (k + 6)s + k = 0. In the root loci diagram, the asymptotes of the root loci for large 'k' meet at a point in the s-plane whose coordinates are
(-1,0)
(2,0)
(1,0)
(-2,0)
(-1,0)
(2,0)
(1,0)
(-2,0)
Answer
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Control Systems
At which frequency does the Bode magnitude plots for the functions K/S2 have gain crossover frequency
ω = √K rad/sec.
ω = K2 rad/sec.
ω = 0 rad/sec.
ω = K rad/sec.
ω = √K rad/sec.
ω = K2 rad/sec.
ω = 0 rad/sec.
ω = K rad/sec.
Answer
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Control Systems
Which of the following controller has sluggish response?
proportional controller
integral controller
both 2 and 3
derivative controller
proportional controller
integral controller
both 2 and 3
derivative controller
Answer
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Control Systems
In the integral control of the single area system frequency error is reduced to zero. Then
integrator o/p decreases and speed changer position comes down.
integrator o/p increases but speed changer position comes down.
integrator o/p decreases but speed changer position moves up.
integrator output and speed changer position attain a constant value.
integrator o/p decreases and speed changer position comes down.
integrator o/p increases but speed changer position comes down.
integrator o/p decreases but speed changer position moves up.
integrator output and speed changer position attain a constant value.
Answer
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Control Systems
Which one of the following is the steady state error for a step input applied to a unity feedback system with the open loop transfer function G(s) = 10/(s²+14s+50)?
1
0
infinite
0.83
1
0
infinite
0.83
Answer
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