GATE 2025 EMT Foundation Quiz 46

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Question 1

A distortion less line has characteristic Z₀ = 100 Ω, attenuation constant α= 10 mNp/m and phase velocity v= 2 × 10⁸ m/s. The primary constants R and L are respectively.

• A10 Ω/m, 0.5 μH/m
• B1 Ω/m , 5μH/m
• C1 Ω/m, 50μH/m
• D1 Ω/m, 0.5 μH/m

Question 2

The electric field intensity given by represents a UPW propagating along y direction in a non-magnetic dielectric medium. The dielectric constant is

• A
• B
• C
• D

Question 3

The electric field intensity of a wave is given by.
Choose the correct option of the following wave

• ALinearly polarized
• BCircularly polarized
• CElliptically polarized
• DUn- polarized

Question 4

Consider a dielectric (ϵ_r = 2.25) filled rectangular waveguide with dimensions a x b (a > b). If the cut off frequency of the guide is 4 GHz, then the value of dimension a is ________ cm.

• A6.0
• B2.5
• C3.0
• D5.5

Question 5

An air filled rectangular wave guide is operating at 6 GHz with dominant propagating inside it. If the wavelength inside the wave guide is 6cm, then the wave impedance of the mode is given by ______.

• A245.6
• B345.6
• C452.4
• D568.6

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