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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 = 0 rad/sec.
ω = √K rad/sec.
ω = K2 rad/sec.
ω = K rad/sec.
ω = 0 rad/sec.
ω = √K rad/sec.
ω = K2 rad/sec.
Answer
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Control Systems
Time constant is defined as the time taken by the response of the system to reach ----------- ?
70.7% of the final value
50% of the final value
63% of the final value
100% of the final value
70.7% of the final value
50% of the final value
63% of the final value
100% of the final value
Answer
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Control Systems
A lead compensator used for a closed loop controller has the following transfer function For such a lead compensator
a < b.
b < a.
a < kb.
a > kb.
a < b.
b < a.
a < kb.
a > kb.
Answer
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Control Systems
Time response for a second order system depends on value of ξ. If ξ = 1 then the system is called as
critically damped system.
under damped system.
over damped system.
undamped system.
critically damped system.
under damped system.
over damped system.
undamped system.
Answer
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Control Systems
When writing a transfer function which of the following loops are not valid loops?
Self loops at input node.
Self loops at output node.
Neither 1 nor 2.
Both 1 and 2.
Self loops at input node.
Self loops at output node.
Neither 1 nor 2.
Both 1 and 2.
Answer
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Control Systems
A unity feed back system has forward transfer function The range of k for the system to be stable is
0 < k < 3900.
None of these
0 < k < 39.
0 < k < 390.
0 < k < 3900.
None of these
0 < k < 39.
0 < k < 390.
Answer
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