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Control Systems
The system having characteristic equation is used to be an oscillator. What is the value of k?
2
4
1
3
2
4
1
3
Answer
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Control Systems
To achieve the optimum transient response, the indicating instruments are so designed as to
provide damping which is slightly more than the critical value.
be critically damped.
provide damping which is slightly less than the critical value.
be undamped.
provide damping which is slightly more than the critical value.
be critically damped.
provide damping which is slightly less than the critical value.
be undamped.
Answer
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Control Systems
The transfer function of phase lead compensator is given by , where, T > 0, α < 0. What is the maximum phase shift provided by this compensator?
tan-1((1 - α)/(2√α)
both 1 and 3
sin-1((1 - α)/(1 + α)
cos-1((1 - α)/(1 + α)
tan-1((1 - α)/(2√α)
both 1 and 3
sin-1((1 - α)/(1 + α)
cos-1((1 - α)/(1 + α)
Answer
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Control Systems
For a unity feedback control system open loop transfer function then acceleration error constant is
0.
infinity.
20.
50.
0.
infinity.
20.
50.
Answer
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Control Systems
The characteristic equation of a control system is given by What are the angles of asymptotes of the root loci for k ≥ 0?
60°, 180°, 300°
0°, 180°, 300°
0°, 120°, 240°
120°, 180°, 240°
60°, 180°, 300°
0°, 180°, 300°
0°, 120°, 240°
120°, 180°, 240°
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 = K2 rad/sec.
ω = √K rad/sec.
ω = 0 rad/sec.
ω = K rad/sec.
ω = K2 rad/sec.
ω = √K rad/sec.
ω = 0 rad/sec.
ω = K rad/sec.
Answer
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