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1
GATE ECE 1989
MCQ (Single Correct Answer)
+2
-0.6
In the case of ground wave propagation, at far-off distances from the transmitting tower antenna, the Poynting vector is
A
in the truly horizontal direction
B
essentially horizontal but for a small downward component
C
essentially horizontal but for a small upward component
D
directed upward at an angle determined by the "effective height" of the transmitting tower antenna.
2
GATE ECE 1988
MCQ (More than One Correct Answer)
+2
-0.6
The electric field E and the magnetic field H of a short dipole antenna satisfy the condition
A
the r component of E is equal to zero
B
both r and $$\theta $$ components of H are equal to zero
C
the $$\theta $$ component of E dominates the r component in the far-field region
D
the $$\theta $$ and $$\phi $$ components of H are of the same order of magnitude in the near-field region
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