TLW Surprise Quiz-2

Identify the dominant mode for the TM propagation in a parallel plane waveguide.

• TM₀

• TM₁

• TM₂

• TM₃

• Energy is increased

• Energy is decreased

• Propagation takes place

• Propagation does not takes place

What will be the phase velocity of an electromagnetic wave propagating in a hollow metallic rectangular waveguide in the TE₁₀ mode?

• equal to its group velocity

• less than the velocity of light in free space

• equal to the velocity of light in free space

•  greater than the velocity of light in free space

Tell the reason among the following for which the dominant mode in a rectangular waveguide is  TE₁₀ mode.

• No attenuation

• Highest Cut-off Wavelength

• No Magnetic Field

• No Cut-off frequency

For a parallel plate transmission line, let v be the velocity of propagation and Z be the characteristic impedance. Neglecting fringing fields, what will be results of two parameters if the spacing between the plates is reduced?

• No change in v and halving of Z

• Halving of v and no change in Z

• No change in both v and Z

• Halving of both v and Z

Recall the characterization of TEM wave along Z direction.

• The components H and E are transverse 60° to the direction of propagation of the waves

• The components H and E are transverse 90° to the direction of propagation of the waves

• The components H and E are transverse 45° to the direction of propagation of the waves

• The components H and E are transverse 120° to the direction of propagation of the waves

If a wave is having group velocity of 2 x 10^8 m/s, compute the phase velocity.

• 3 x 10^8 m/s

• 4.5 x 10^8 m/s

• 6 x 10^8 m/s

• 9 x 10^8 m/s

Waveguide can be considered as _____

• High Pass Filter

• Low Pass Filter

• Band Pass Filter

• Band Stop Filter

Interpret the degenerate modes (similar modes) in rectangular waveguides.

• TM₀₁

• TE₁₀

• TE₁₀ and TM₁₀

• TE₁₁ and TM₁₁

Relate the wave impedance of a TM mode in a parallel plate waveguide with respect to frequency.

• Function of frequency

• Independent of frequency

• Proportional to square of frequency

• Inversely proportional to square of frequency