Q. For a rectangular waveguide having width a and height b, the cutoff wavelength for TM₁₁ mode is equal to

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Q. If ZTE is wave impedance for TE waves, Ed is maximum dielectric strength of insulating material, a and b are the width and height of a rectangular wave guide, the maximum power handling capability Pmax for TE₁₀ mode is

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Q. In the given figure a short circuited transmission line resonator If n = 1, 2, 3...

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Q. The Q factor of a waveguide resonator is given by (ω0 is resonant frequency, U is energy storage and WL is the power loss)

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Q. For l << λ, the equivalent circuit of a microwave resistor is

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Q. If μr is relative permeability, ∈r is relative permittivity, c is velocity of light fc is cutoff frequency, phase velocity vp (i.e., speed with which a particular phase of the wave travels down a rectangular waveguide at frequency f) is given by

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Q. A square waveguide carries TE₁₁ mode whose axial magnetic field is given by following equation, where the guide dimensions are in cms. The cut off frequency of the mode is

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Q. In the given figure shows a 10dB directional coupler. If power input at port 1 is 100 mW, power output at port 3 is

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Q. In the given figure the line voltage after a number of reflections will be

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Q. In directional coupler of the given figure, the terms |S₁₄| and |S₂₃| of scattering matrix are nearly

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Q. A 3 port circulator is in the given figure. Its scattering matrix is

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Q. If ρv is reflection coefficient and VSWR is voltage standing wave ratio, then

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Q. In terms of R, L, G and C the propagation constant γ of a transmission line is

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Q. In the given figure power meters at A and B indicate 1 mW and 110 μW respectively. VSWR of line is

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Q. Which of the following are true for magic tee in the given figure select the answer as per given codes

1. S13 = S23
2. S14 = S24
3. S12 = 0
4. S34 = 0

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Q. The arrangement in the given figure is a hybid T. If 100 mW fed at port 1, the power reflected back at port 1 is

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Q. If wavelength in free space is λ₀ wavelength in insulator λ, μr is relative permittivity or insulator and ∈r is relative permittivity or insulator, then

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Q. In the given figure the circuits for input impedance of a microwave device with output ports match terminated. The device is

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Q. The scattering matrix of magic tee is

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Q. Guide wavelength (λg), cutoff wavelength (λc) and free space wavelength (λ₀) of a waveguide are related as

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