ECE :: Electromagnetic Field Thoery
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In case of antenna the lower value of Q indicates
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Magnetic susceptibility of a medium is the ratio of
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In order to receive a vertically polarized wave, the conductor of the dipole should be mounted
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Which of the following statements is incorrect?
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Reflectors and lens antennas are commonly used
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In case of concentric conductors of radius a and b the value of capacitance (C) is given by
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In a uniform linear array, four isotropic radiating elements are spaced λ/4 apart. The progressive phase shift between the elements required for forming the main beam at 60° off the end fire is
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When a coil consisting of single turn rotates at a uniform speed in a magnetic field, the induced e.m.f. is
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A.
The line integral of B around the circuit is called magnetomotive force
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B.
Normal components of B are continuous but the normal components of H are not continuous
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C.
Magnetic flux lines are bent away from the normal in the medium with the highest value of permeability
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D.
The unit of permeability is henry/metre
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radius 
radius 
radius