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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Q. Phase velocity of waves propagating in a hollow metal waveguide is

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Q. Good smoothing factor of a coil depends on

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Q. A TEM wave incident obliquely on a dielectric boundary with εr1 = 2 and εr2 = 1, the angle of incidence for total reflection is

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Q. The total field produced by an antenna array system at a distance from it is

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Q. A perfect conductor is a perfect absorber of electromagnetic waves.

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Q. In a lead acid cell the density of the acid gives an indication of

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