ECE :: Automatic Control Systems
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Consider the following systems
System I,
System II,
where C(s) is the output and R(s) is the input of these systems -
Nyquist stability criterion is based on a theorem from the theory of complex variables.
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For the function G(s) H(s) =
the phase cross-over frequency is -
While forming Routh's array, the situation of a row of zeros indicates that the system
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Assertion (A): In liquid system the ratio of change in liquid level to change in flow rate is called resistance of liquid flow.
Reason (R): In liquid level systems the ratio of change in liquid stored in a tank to the change in head is called capacitance of tank.
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The frequency at which phase angle is 180° is called
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In a mechanical accelerometer, the steady state displacement is a measure of
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A unity feedback system has
. If input r(t) = 1 + 2t + 
t3, the steady error is -
Assertion (A): The root locus of a control system is symmetrical about real axis.
Reason (R): For all polynomials with real coefficients, complex poles always occur in conjugate pairs.
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In log magnitude Bode diagram the slope of high frequency asymptote of (1 + jωT) is
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A.
System I has larger bandwidth and faster speed of response than System II
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B.
System II has larger bandwidth and faster speed of response than System I
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C.
System I has larger bandwidth but System II has faster speed of response
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D.
System II has larger bandwidth but System I has faster speed of response
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