InterviewSolution
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InterviewSolution
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If Z1, Z2 are same type of reactance, and if α = 0, then the value of β is?(a) β=2 sin^-1(√(Z1/4 Z2))(b) β=2 sin^-1(√(4 Z1/Z2))(c) β=2 sin^-1(√(4 Z1/Z2))(d) β=2 sin^-1(√(Z1/Z2))The question was posed to me during an internship interview.Enquiry is from Classification of Pass Band and Stop Band in division Filters and Attenuators of Network Theory |
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Answer» RIGHT option is (a) β=2 sin^-1(√(Z1/4 Z2)) The best EXPLANATION: If α = 0, sin β/2 = x(√(Z1/4 Z2). But sine can have a maximum value of 1. Therefore the above solution is valid only for Z1/4 Z2, and having a maximum value of unity. It indicates the condition of PASS band with zero attenuation and FOLLOWS the condition as -1 < Z1/4 Z2 <= 0. So β=2 sin^-1(√(Z1/4 Z2)). |
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