Exam Questions Papers - Engineering

Q1:

Which factor determines whether the medium is free space, lossless dielectric, lossy dielectric or good conductor?

A Attenuation constant

B Constitutive parameters (σ, μ, ε)

C Loss tangent

D Reflection coefficient

ANS:C - Loss tangent

Loss tangent (i) for lossless dielectric, tan θ ≤ 1 (ii) for good conductor, tan θ >> 1 (iii) for lossy dielectric, tan θ = 1.