Q. For VLF antennas radiation resistance is usually of the order of

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Q. The attenuation factor in parallel plane guides is given by

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Q. Which of the following relations is incorrect?

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Q. An antenna array pattern is to used for increasing

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Q. MUF is given by

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Q. A waveguide behave as

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Q. Radar antennas are usually

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Q. The radio horizon for space waves is about three-fourth as for as the optical horizon.

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Q. Triatics are

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Q. Ground wave propagation is useful for

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Q. Radiowaves are electromagnetic waves having frequency range

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Q. When a line of any odd multiple of a quarter wavelength is short-circuited it represents

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Q. An antenna is considered to be in free space where its height above the ground is

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Q. In waveguide Degenerate modes are

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Q. Zoning is used with a dielectric antenna in order to

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Q. For aeroplane and navigation frequency band is

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Q. Poynting vector signifies which of the following?

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Q. Which one is correct?

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Q. When a magnetic circuit is compared with an electric circuit, the equivalent of the magnetic flux is

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Q. For a distortionless line, the parameters are related as

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