Electromagnetic Field Theory Which of the following will increase the antenna radiation efficiency? Top loading of antenna Use of larger section of conductor Any of the above Providing insulation on conductor Top loading of antenna Use of larger section of conductor Any of the above Providing insulation on conductor ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory As a result of reflection from a plane conducting wall, electromagnetic waves acquire an apparent velocity greater than the velocity of light in space. This is called the phase velocity. velocity of propagation. group velocity. normal velocity. phase velocity. velocity of propagation. group velocity. normal velocity. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory An insulated metal sphere of 20 cm diameter is charged by rubbing with charges 2 × 10-8 C. Potential developed will be 1800 V. 0 V. 200 V. 900 V. 1800 V. 0 V. 200 V. 900 V. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A rectangular waveguide is a Hollow rectangular conducting tube through which electromagnetic waves can be propagat-ed Hollow rectangular walled room carrying electromagnetic wave Rectangular conducting wire to propagate electromagnetic waves Tube antenna to transmit and receive electromagnetic waves Hollow rectangular conducting tube through which electromagnetic waves can be propagat-ed Hollow rectangular walled room carrying electromagnetic wave Rectangular conducting wire to propagate electromagnetic waves Tube antenna to transmit and receive electromagnetic waves ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The attenuation in waveguide above to cut off frequency Very low Infinite Very high Zero Very low Infinite Very high Zero ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A sphere of radius with a uniform charge density ρv C/m3 shall have electric flux density at radius “r = a” equal to aρv C/m2. aρv/3 C/m2. aρv/4 C/m2. ρv/3 C/m2. aρv C/m2. aρv/3 C/m2. aρv/4 C/m2. ρv/3 C/m2. ANSWER DOWNLOAD EXAMIANS APP
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