22EC4204 TLW practice quiz5

In rectangular waveguides, the dimensions a and b represent the ________

• Broad wall dimensions

• Broad wall and side wall dimension respectively

• Side wall and broad wall dimension respectively

• Side wall dimensions

The condition which will satisfy the dimensions of the waveguide is ___________

• a = b

• a > b

• a < b

• ab = 0

The sin θ in the waveguide refers to the ratio of _______

• Frequency to wavelength

• Wavelength to frequency

• Cut off frequency to frequency

• Frequency to cut off frequency

The cut off frequency of the dominant mode in a TE wave in the line having a and b as 2.5 cm and 1 cm respectively is 6 GHz. Is the transmission of a frequency 5 GHz possible in the waveguide?

• possible

• impossible

• may be

• None of the options mentioned

The modes of propagation supported by a rectangular wave guide is ___________

• TM, TEM, TE modes

• TM, TE

• TM, TEM

• TE, TEM

A hollow rectangular waveguide cannot propagate TEM waves because _____________

• of the existence of only one conductor

• of the losses caused

• it is dependent on the type of the material used

• None of the options mentioned

For any mode of propagation in a rectangular waveguide, propagation occurs _________

• Above the cut off frequency

• Below the cut off frequency

• Only at the cut-off frequency

• Depends on the dimension of the waveguide

TEₒₒ mode for a rectangular waveguide:

• Exists

• Exists but defined only under special cases

• Does not exist

• Cannot be determined

The lowest mode of TE mode propagation in a circular waveguide is ________ mode

• TE10

• TE00

• TE01

• TE11

The dominant mode in a rectangular waveguide is TE10 because this mode has

• No attenuation

• No cut off frequency

• No magnetic field component

• The highest cut off wavelength