Q. Consider a 300 Ω, quarter wave long at 1 GHz transmission line as shown in figure. It is connected to a 10 V, 50 Ω source at one end is left open circuited at the other end. The magnitude of the voltage at the open circuit end of the line is

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Q. Most antenna consisting of a 50 meter long vertical conductor operates over a perfectly conducting ground plane. It is base fed at a frequency of 600 kHz. The radiation resistance of the antenna in ohms is

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Q. A plane wave is characterized by following equation. The wave is

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Q. A uniform plane wave is one in which

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Q. The electric field of the incident wave is given by following equation. Where ω = 3 x 10⁹π and β = 10 π. The electric field of the transmitted wave Et is given by

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Q. A short circuited stub is shunt connected to a transmission line as shown in the figure is, if z0 = 500 ohms, the admittance y seen at the function of the stub and the transmission line is

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Q. The torque (in mm) acting on a circular current loop of radius 1 mm in the xy plane, connected at the origin and with current 0.1 A, flowing in the sense of increasing in a following magnetic field is

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Q. Two identical antennas are placed in the θ = π/2 plane as shown in the figure. The elements have equal amplitude excitation with 180° polarity difference, operating of the far-zone resultant electric field strength normalized with that of a single element, both computed for φ = 0, is

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Q. For static magnetic field Maxwell's curl equation is given by

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Q. Two identical and parallel dipole antenna are kept apart by a distance of λ/4 in the H-plane. They are fed with equal currents but the right most antenna has a phase shift of + 90°. The radiation pattern is given as

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Q. Which one of the following statement is not a correct for a plane wave with

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Q. For a transmission line with homogeneous dielectric the capacitance per unit length is 'c', the relative permittivity of the dielectric is 'εr' and velocity of light in free space is 'v' the characteristic impedance z0 is equal to

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Q. If the electric field intensity is given by following equation, the potential difference between x(2, 0, 0) and y(1, 2, 3) is

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Q. Medium 1 has the electrical permittivity ε1 = 1.5 ε0 farad/m and occupies the region to the left of x = 0 plane. Medium 2 has the electrical permittivity ε2 = 2.5 ε0 farad/m and the occupies the region to the right of x = 0 plane. If E1 in medium 1 is given by below equation, then E2 in medium 2 is

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Q. Find the flux crossing the plane surface defined by 0.5 ≤ r ≤ 3.5 m and 0 ≤ z ≤ 3 m. if

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Q. The sinusoidally time varying vector field is

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Q. Which of the following relations is valid?

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Q. The directive gain of an antenna is given by

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Q. Which of the following relations is correct?

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Q. In case of static electric field Maxwell's divergence equation states that:

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