Which of the following is a positive real function?
Hence, notaPRF.
has a zero (s = 1) in RH splane.
Hence, not a PRF.
has a pole and a zero in RH spiane.
Hence, not a PRF.
Option (b) is a PRF as all poles and zeros lie in LH splane.
A network function can be completely specified by:
Which of the following property does not relates to LC impedance or admittance functions?
If the impulse response is realisable by delaying it appropriately and is bounded for bounded excitation, then the system is said to be
Since system is bounded for bounded excitation therefore, it will be stable.
Since the system is delayed therefore, output may exist before the input is applied.
Hence, the system will be noncausal.
A networkA has zeros only in the lefthalf of the splane while the networkB has zeros only in the righthalf of the splane. The networkA and NetworkB will be respectively called
An LC admittance or impedance function
If F_{1}(s) and F_{2}(s) are positive real functions, then which of the following are positive real function?
For the polezero plot shown below, the network function is
Here, zeros are at: s = 0, 0,3
Poles are at s =  1,
or, poles are at (s + 2)^{2} + 1  0 and at s = 1 or, s^{2} + 4s + 5 = 0 and at s = 1
A stable system must have
Which of the following is not a positive real function?
Here, a = 1 , b = 0, c = 2
Thus, a, b, c ≥ 0 but b < a
For PRF, b ≥ a therefore, option (d) is not a PRF.
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