1.
Linear polarization can be obtained only if the wave consists of ________
2.
When an electromagnetic wave travels from transmitter to receiver, which factor/s affect/s the propagation level?
3.
For avoiding ground losses, better is the surface conductivity, less is the __________
4.
On which factors of earth does the magnitude of tilt angle depend in surface wave?

Permittivity
Conductivity
Resistivity
Reflectivity
5.
What is the direction of varying orientation of polarized surface wave at the earth surface in a wave tilt mechanism?
6.
Which layer has the atmospheric conditions exactly opposite to that of standard atmosphere?
7.
If the maximum electron density for F-layer in ionosphere is 4 x 106 electrons/cm3, then what will be the critical frequency of EM wave for F-layer?
8.
How is the effect of selective fading reduced?

By high carrier reception
By low carrier reception
By single side band system
By double side band system
9.
In lens antenna, what kind of wave energy is transformed into plane waves?
10.
What is the functioning role of an antenna in receiving mode?