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Control Systems
The characteristic equation of a control system is given below: The system is
marginally stable
critical stable
unstable
stable
marginally stable
critical stable
unstable
stable
Answer
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Related Question
Control Systems
A open loop transfer function is given as G(s) = (s+2)/(s+1)(s-1). Find the number of encirclements about '-1+j0'?
3
1
0
2
3
1
0
2
Answer
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Control Systems
Certain control system has input u(t) and output c(t). If the input is first passed through a block having transfer function e-s and unit gain is applied to the applied to the system. The modified output will be
c(t-1).u(t-1)
c(t)u(t)
c(t-1).u(t)
c(t).u(t-1)
c(t-1).u(t-1)
c(t)u(t)
c(t-1).u(t)
c(t).u(t-1)
Answer
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Control Systems
The maximum phase lag occurs at the ------------------- of the two corner frequencies?
None of these
arithmetic mean
geometric mean
either 1 or 2
None of these
arithmetic mean
geometric mean
either 1 or 2
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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Control Systems
By using which of the following elements, mechanical translational systems are obtained?
dash-pot
All of these
mass element
spring element
dash-pot
All of these
mass element
spring element
Answer
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