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The poles of driving point impedance are those frequencies corresponding to ___________ conditions.(a) short circuit(b) voltage source(c) open circuit(d) current sourceI had been asked this question in class test.The above asked question is from Properties of Driving Point Functions topic in chapter S-Domain Analysis of Network Theory

Answer»

Correct ANSWER is (c) OPEN circuit

To elaborate: A zero of N(s) is a zero of V(s), it signifies a short circuit. SIMILARLY, a pole of Z(s) is a zero of I(s). The poles of driving point impedance are those frequencies corresponding to open circuit conditions.



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