Electronics and Communication Engineering - Electromagnetic Field Theory

11.
A line of characteristic impedance z0 ohms, phase velocity VP = 2 x 108 m/sec and length l = 2 m is terminated by a load impedance zL Ohms. The reflection coefficients at the input end and load end are respectively for a frequency of 50 MHz will be
1
- 1
-1
2
Answer: Option
Explanation:

ri .


12.
When a particular mode is excited in a waveguide, these appears an extra electric components in the direction of propagation. The resulting mode is
Transverse electric
Transverse magnetic
Longitudinal
Transverse Electromagnetic
Answer: Option
Explanation:
No answer description is available. Let's discuss.

13.
An antenna has a gain of 44 dB. Assuming that the main beam of the antenna is circular in cross-section the beamwidth will be
0.4456°
1.4456°
2.4456°
3.4456°
Answer: Option
Explanation:

.


14.
The directive gain of an antenna is given by
Answer: Option
Explanation:
No answer description is available. Let's discuss.

15.
In cellphone communication base antennas are connected to other base antennas in
line of sight communication
ionospheric propagation
ground wave propagation
medium wave propagation
Answer: Option
Explanation:
No answer description is available. Let's discuss.