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Control Systems
The phase of lead compensator of the system G ( s ) = ( s + a ) / ( s + b ) is at its maximum at:
√( ab ).
a / b.
ab.
√( a / b).
√( ab ).
a / b.
ab.
√( a / b).
Answer
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Related Question
Control Systems
The error of a system to a ramp input is 1/5, if the type of the system is decreased by one, then the error of unit step input is
5
6/5
0.2
0.167
5
6/5
0.2
0.167
Answer
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Control Systems
The unit step response of the system is 1 - e-t(1+t). Which is the system?
oscillatory
unstable
stable
critically stable
oscillatory
unstable
stable
critically stable
Answer
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Control Systems
A cascade of three linear time invariant systems is causal and unstable. From this we conclude that
each system in the cascade is individually caused and unstable.
at least one system is causal and all systems are unstable.
the majority are unstable and the majority are causal.
at least one system is unstable and at least one system is causal.
each system in the cascade is individually caused and unstable.
at least one system is causal and all systems are unstable.
the majority are unstable and the majority are causal.
at least one system is unstable and at least one system is causal.
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).u(t-1)
c(t-1).u(t)
c(t-1).u(t-1)
c(t)u(t)
c(t).u(t-1)
c(t-1).u(t)
c(t-1).u(t-1)
c(t)u(t)
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)?
0.83
1
infinite
0
0.83
1
infinite
0
Answer
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