Electromagnetic Field Theory - Section 1 (1)

Characteristic impedance of a transmission line is 50 Ω. Input impedance of the open circuited line.
Z_oc = 100 + J150 Ω. When transmission line is short circuited, then value of the input impedance will be

The displacement flux density at a point on the surface of a perfect conductor is  = 2(a_x - √3 a_z)c/m² pointing away from the surface. The charge density at that point c/m² will be

Find the noise factor for an antenna at 27°C with equivalent noise temperature 30°K

Two identical antennas are placed in the θ = p/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

The radiation resistance of a λ/16 wire dipole in free space will be nearly

In a conductor which of the following relations hold good?

A parallel polarized wave is incident from air into paraffin having relative permittivity 3, the value of its Brewster angle is

A transmission line is feeding 1 watt of power to a horn antenna having a gain of 10 dB. The antenna is matched to the transmission line. The total power radiated by the horn antenna into the free space is