ECE :: Electromagnetic Field Thoery
-
A material has conductivity of 10-2 mho/m and a relative permittivity of 4. The frequency at which conduction current in the medium is equal to displacement current 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
-
An end fire array consisting of several half-wave lengths of directive gain 40, then find the width of major lobe
-
A uniform plane EM wave incident normally on a plane surface of a dielectric material is reflected with a VSWR of 3. What percentage of incident power that is reflected?
-
Poynting vector is associated with which of the following?
-
A broadside array consisting of 200 cm wavelength with 10 half-wave dipole spacing 10 cm. And if each array element feeding with 1 amp. current and operating at same frequency then find the radiated power
-
For static magnetic field Maxwell's curl equation is given by
-
If wave of critical frequency 30 MHz is departing at an angle of 60°, then the MUF is given to be
-
An antenna having an effective temperature of 27°K is fed into a microwave amplifier that has an effective noise temperature of 30 K. Calculate the available noise power per unit bandwidth
-
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
Whatsapp
Facebook
σE = ωD = 2
.
= μ0
.
