Q. A rectangular waveguide (2.29 x 1.02) cm operates at a freq. of 11 GHz in TE₁₀ mode. If the maximum potential gradient of the signal is 5 kV/cm, then the maximum power handling capacity of the waveguide will be

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Q. A parabolic antenna produces a radiation pattern which is

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Q. Considerable ionization occurs between the range

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Q. Gain of isotropic antenna is

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Q. Antenna is a __________ element

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Q. Laplacian of a scalar function v is

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Q. The numerical value of directive gain may lie between

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Q. The wave propagation occurs without attenuation in case of a

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Q. When the phase velocity of an EM wave depends on frequency in any medium, the phenomenon is called

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Q. A hertzian dipole has a radiation pattern with

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Q. Circular polarized waves result when

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Q. Permeance is analogue to

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Q. Skip distance (D) is

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Q. 300 to 3000 MHz frequency is categorized as

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Q. The gain of an antenna with a circular aperture of diameter 3 metres at a frequency of 5 GHz, will be

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Q. The gain of a current element is

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Q. Poynting theorem relates the electric intensity E, magnetic intensity H to the rate of energy flow per unit area at a point P as

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Q. The absorption of EM wave by the atmosphere depends on

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Q. In end fire array the principle direction of radiation

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Q. The gain of an half wavelength antenna is

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