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ESE 2021 Technical Quiz 77 ||Waveguides
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Question 1
A waveguide of square cross section measures 6 cm on each side. The lowest cutoff frequency for the TM mode is
Question 2
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 3
An air-filled rectangular waveguide has dimension a = 2 cm and b = 1.5cm. If waveguide is operating at 15 GHz with TE01 mode, then the corresponding phase velocity will be
Question 4
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
has the inside dimensions . The cut–off frequency for the dominant mode is Question 5
As the wave frequency approaches to cut-off frequency of wave guide, the correct statement is:
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Jun 6ESE & GATE EC
