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GATE 2019: Electromagnetics Quiz 8

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Question 1

An air-filled rectangular waveguide has inside dimensions 1 cm × 0.5 cm. The cut-off wavelength for TE01 mode is _______ cm.

Question 2

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

Question 3

Let are off wavelength of andmodes of an air filled rectangular wave guide with dimension 2.5 .The relation among the wavelengths is given by

Question 4

An air filled rectangular waveguide with inside dimensions 2 x 1 cm is excited with a source of 7 GHz. If the waveguide is operating in dominant mode, then phase constant inside the waveguide is given by_______ (rad/m)

Question 5

A 8cm x 4 cm guide is made of a material  with  σ=0, The propagation constant for and mode at

Question 6

The modes in a rectangular waveguide are denoted by TEmn/TMmn where m and n are the eigen numbers along the larger and smaller dimensions of the waveguide respectively. Which one of the following statements is TRUE?
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