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Obtain the admittance of the last two elements in the parallel combination after transformation in the circuit shown below.(a) 1+s(b) 2+s(c) 3+s(d) 4+sThis question was posed to me during an internship interview.My doubt is from Series and Parallel Combination of Elements topic in section S-Domain Analysis of Network Theory

Answer» RIGHT choice is (d) 4+s

To explain I would SAY: The term admittance is defined as the INVERSE of IMPEDANCE. The admittance of capacitor is 1/s and the admittance of resistor is 1/4 mho. So the admittance of the last two ELEMENTS in the parallel combination is Y1(s) = 4 + s.


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