Electromagnetic-theory Questions Set 12:
The universal property among all substances is
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The main purpose of studying a hysteresis curve for a given magnetic material is to estimate the
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If an antenna has its electric field given by E(θ, Φ) = E₀ sin(2θ), then its half-power beamwidth (HPBW) is:
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A wave has an electric field of 20 units and a magnetic field of 9.5 units. Find the intrinsic impedance of the wave.
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A wave travelling in a transmission line has a wavelength of 8 units and velocity of 13.5 × 107 units/s. Calculate its frequency.
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Find the wavelength of the wave if the cut-off wavelength and the guided wavelength are given as 1.2 and 4.5 units, respectively.
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The incident power of a transmission line is 3.2 times more than the power reflected. What will be the reflection coefficient of the transmission line?
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A long straight wire of radius 'a' carries a steady current I. The current is uniformly distributed across its cross-section. The ratio of the magnetic field at a/2 and 2a is:
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Determine the electrostatic potential energy of a system consisting of two charges, 7 μC and -2 μC, with no external field, placed at (-9 cm, 0, 0) and (9 cm, 0, 0) respectively.
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A short dipole antenna with the following specifications is designed. Considering the given parameters, what should be the radiation resistance (in Ω) of the antenna?
The antenna radiates at 600 kHz with an effective height of 20 m.
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