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GATE 2023 EMT Evaluation Quiz 9

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Question 1

A short- circuited stub is connected to a 50 Ω transmission line as shown in figure. The admittance seen at the junction of the stub and the transmission line is

Question 2

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.

Question 3

The electric field intensity given by

represents a UPW propagating along y direction in a non-magnetic dielectric medium. The dielectric constant is

Question 4

The electric field intensity of a wave is given by

.
Choose the correct option of the following wave

Question 5

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.

Question 6

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 ______ $Description: E:\Gate\Gate-EC\04_Elctromgntic_BL-done_files\image035.png$ .

Question 7

An air-filled rectangular waveguide of internal dimensions a cm × b cm(a > b) has a cutoff frequency of 6 GHz for the dominant TE₁₀ mode. For the same waveguide, if the cutoff frequency of the TM₁₁ mode is 15 GHz, the cutoff frequency of the TE₀₁ mode in GHz is ___________.

Question 8

A rectangular waveguide having TE₁₀ mode as dominant mode is having a cutoff frequency of 18-GHz for the TE₃₀ mode. The inner broad-wall dimension of the rectangular waveguide is:

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ESE & GATE EC Electromagnetics

Oct 25ESE & GATE EC