Q. Two LOS antennas having power gains of G1 and G2 are separated transmitted power, Pr is received power turn Pr/Pt will be proportional to

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Q. The force acting on a charge q moving with velocity v̅ in a region of electric field E̅ and magnetic field B̅ is

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Q. What is the characteristic impedance Z0 of a line having R, inductance L, capacitance C and conductance G?

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Q. Which one of the following is not a correct Maxwell equation?

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Q. The current distribution along a travelling wave antenna can be written in the form

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Q. Divergence theorem relate surface integration with volume integration as

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Q. In figure the current distribution is represented by

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Q. Given the following equation, if the radiation intensity of an antenna is proportional to sin² θ, where θ is the elevation angle, the antenna directivity will be

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Q. The radiation pattern of helical antenna (axial mode) is represented by

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Q. Antenna aperture efficiency is given by

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Q. The characteristic equation of plane wave in E independent of two dimensions y and z is

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Q. A broadside array is shown in figure in which the elements are placed at equal distances. The direction of maximum radiation is represented by

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Q. Which one of the following is correct expression. Where t is torque, B magnetic field, M is the moment

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Q. For an incident wave which is normal on the perfect dielectric the reflection factor is given by (where ε1 and ε2 are the permittivities of 1st and 2nd medium respectively)

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Q. For EM wave propagation in free space, the free space is defined as

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Q. A field given below can be

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Q. If a plane electromagnetic wave satisfies the equation given below, the wave propagates in the (at an angle of 45° between the x and z direction)

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Q. Laplace equation in cylindrical co-ordinates is given by

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Q. For transmission of waveform a dielectric medium of permittivity ε1 into a dielectric medium of lower permittivity ε2 , (ε1 > ε2) the critical angle of incidence θc (relative to the interface) is given by

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Q. Maximum power transfer will take place in a practical antenna if (XL = Load Reactance, XA Antenna Reactance)

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