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Control Systems
The graph of an electrical network has N nodes and B branches. The number of links, L with respect to the choice of a tree, is given by
N - B + 1.
N - 2B - 1.
B + N.
B - N + 1.
N - B + 1.
N - 2B - 1.
B + N.
B - N + 1.
Answer
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Control Systems
A system has poles at 0.01 Hz, 1 Hz and 80 Hz; zeros at 5 Hz, 100 Hz and 200 Hz. The approximate phase of the system response at 20 Hz is
180°
90°
-90°
-180°
180°
90°
-90°
-180°
Answer
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Control Systems
Resonant peak of a marginally stable system is
infinite
any of the above
finite value
0
infinite
any of the above
finite value
0
Answer
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Control Systems
The angle condition used for checking whether any point lies on root locus or not is...........
± (2q) 360o.
± (2q + 1) 180o.
± (2q) 180o.
± (2q + 1) 360o.
± (2q) 360o.
± (2q + 1) 180o.
± (2q) 180o.
± (2q + 1) 360o.
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 = K rad/sec.
ω = 0 rad/sec.
ω = K2 rad/sec.
ω = √K rad/sec.
ω = K rad/sec.
ω = 0 rad/sec.
ω = K2 rad/sec.
Answer
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Control Systems
Lead network is used to
both A and C.
increase bandwidth.
improve transient response.
improve steady state response.
both A and C.
increase bandwidth.
improve transient response.
improve steady state response.
Answer
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