A loop antenna is a commonly used for
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ECE · all questionsElectromagnetic Field Theory
Electromagnetic Field Theory
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The divergence of a vector is a scalar, while the curl of a vector is another
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Which antenna is a wideband antenna?
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The potential that appears at a point in space due to the current which caused it is called potential
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The minimum height of outer atmosphere is
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The radiation pattern of a parabola antenna is
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The virtual height of an ionospheric layer is __________ true height
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The transmitting antennas for lower frequencies (below 500 kHz) are generally
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Which of the following will increase the antenna radiation efficiency?
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According to maximum power transfer theorem, the maximum power is absorbed by one network from another network when
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Tropospheric scatter propagation is not subject to any fading.
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A square corner reflector is used in which of the following?
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In an impedance smith chart, a clockwise movement along a constant resistance circle gives rise to
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In case of surface waves the field strength at a point is directly proportional to
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The radiation pattern of Hertzian dipole in the plane perpendicular to dipole is a
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In a perfect conductor the incident and reflected wave combine to produce
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It is best to use for coupling a coaxial line to a parallel wire transmission line.
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In H-plane metal plate lens the travelling wave front is
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Which of the following is multiband HF receiving antenna?
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An open wire transmission line having a characteristic impedance of 600 ohms is terminated by a resistive load of 900 O. The standing wave ratio will be
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