Which ionization layer exists during day time & usually vanishes at night due to highest recombination rate?
A. D-region
B. Normal E-region
C. Sporadic E-region
D. Appleton region
Related Questions on Antenna & Wave Propagation Test Questions
A. 1 m – 10 m
B. 1 cm – 10 cm
C. 10 cm – 1 m
D. 0.1 cm – 1 cm
Which among the following is an application of high frequency?
A. SONAR
B. Subsurface communication
C. Radio navigation
D. Facsimile
Wavefront is basically a locus of points acquiring similar _______
A. Phase
B. Frequency
C. Amplitude
D. Wave equation
In which kind of waveform is the phase velocity defined?
A. Sinusoidal
B. Rectangular
C. Square
D. Triangular
Which among the following is/are not present in free space?
A. Solid bodies
B. Ionized particles
C. Interference of normal radiation & radio wave propagation
D. All of the above