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GATE EC : Electromagnetics Champion Quiz 5

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Question 1

A TEM wave is incident normally upon a perfect conductor. The E and H fields at the boundary will be, respectively.

Question 2

In which of the following cases the divergence of electric field is zero

Question 3

Which of the following statements is true regarding the fundamental mode of the metallic waveguides shown?

Question 4

A signal with two frequency components at 6 kHz and 12 kHz, is sampled at the rate of 16 kHz and then passed through a Low Pass filter having a cut-off frequency of 16 kHz. The output signal of the filter

Question 5

Medium 1 has the electrical permittivity

farad/m and occupies the region to the left of x = 0 plane. Medium 2 has the electrical permittivity

farad/m and occupies the region to the right of x = 0 plane. If

in medium 1 is

volt/m, then E₂ in medium 2 is

Question 6

Which of the following does not exist in waveguides

Question 7

A rectangular metal wave–guide filled with a dielectric material of relative permittivity

has the inside dimensions

. The cut–off frequency for the dominant mode is

Question 8

A rectangular wave guide has dimensions 1 cm ×0.5 cm. Its cut-off frequency is

Question 9

A rectangular waveguide of internal dimensions (a = 4 cm and b = 3) is to be operated TE₁₁ mode. The minimum operating frequency is

Question 10

Which one of the following does represent the electric field lines for the TE₀₂ mode in the cross-section of a hollow rectangular metallic waveguide?

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ESE & GATE EC Electromagnetics

May 26ESE & GATE EC