Electromagnetic Field Theory A Yagi antenna has a driven antenna Only With a reflector With one or more directors With a reflector and one or more directors Only With a reflector With one or more directors With a reflector and one or more directors ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Gradient of scalar field is expressed as Outward flux of a vector field per unit volume as the volume about the point tends to zero. Maximum rate of increase of scalar function at a point. Circulation of a vector field per unit area as the area tends to zero. Gradient of divergence of a vector field minus the curl of the vector field. Outward flux of a vector field per unit volume as the volume about the point tends to zero. Maximum rate of increase of scalar function at a point. Circulation of a vector field per unit area as the area tends to zero. Gradient of divergence of a vector field minus the curl of the vector field. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A point charge in space is attracted towards a dielectric material because of the all of above. dielectric hysteresis. phenomenon of dielectric polarisation. maximisation of electrostatic flux. all of above. dielectric hysteresis. phenomenon of dielectric polarisation. maximisation of electrostatic flux. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The transmitting antennas for lower frequencies (below 500 kHz) are generally Any of the above Vertical grounded wire type Horizontal suspended wire type Parabolic reflector type Any of the above Vertical grounded wire type Horizontal suspended wire type Parabolic reflector type ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Which of the following will increase the antenna radiation efficiency? Top loading of antenna Providing insulation on conductor Use of larger section of conductor Any of the above Top loading of antenna Providing insulation on conductor Use of larger section of conductor Any of the above ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The virtual height of an ionospheric layer is __________ true height Less than No relation Equal to Higher than Less than No relation Equal to Higher than ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS