Antenna and Wave propagation MCQ Question and Answer page 4.
1.The Directive gain is ...... on input power to antenna and ...... on power due to ohmic losses.
Independent, independent
2. Which pattern is generated due to plotting of square of amplitude of an electric field?
Power Pattern
3. In an electrically small loops, the overall length of the loop is ...... one-tenth of a wavelength.
Less than
4.In flared transmission line, the radiation phenomenon increases due to ......... in flaring
Increase
5. On which factor/s do/does the radiation field of a small loop depend?
Area
6. For a lossless antenna, maximum Power gain equals to the maximum directive gain.
True
7. The ratio of power radiated in a particular direction to the total input power of antenna is called as .....
Power Gain
8. Effective aperture is the ability of antenna to extract energy from the electromagnetic wave.
True
9. For which band/s is the space wave propagation suitable over 30 MHz?
All of the above
10. Which mode of propagation is adopted in HF antennas?
Ionospheric
Page : 1 2 3 4