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1. If ∈r = ∈r' - j∈r" tan δ = .



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MCQ->Assertion (A): Dielectric losses are proportional to tan δ.Reason (R): tan δ = where ∈r' and ∈r" denote the real and imaginary parts of ∈r.

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MCQ->If h1[n] = 3δ[n] + δ[n - 1], h2[n] = 2δ[n] + δ[n - 2] h3[n] = δ[n] - 3δ[n - 1] + 7δ[n - 4] + 6δ[n - 6] h[n] = h1[n] h2[n] + h3[n] h1[n] has value....
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MCQ->Assertion (A): In a parallel plate capacitor having area of plate 1 m2 and plate separation 1 m, the capacitance C and resistance R are given by C = ∈0∈'r and R = where ω is frequency, ∈r' and ∈r" are real and imaginary parts of dielectric constant.Reason (R): The imaginary part of electric constant is responsible for dielectric losses.

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MCQ->A leaky dielectric has ∈r = ∈r' - j∈r". If a field E is applied, the current component in phase with E is proportional to ∈r".....
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