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Electronics and Communication Engineering - Electromagnetic Field Theory

Exercise : Electromagnetic Field Theory - Section 7
6.
A very reliable service has to be established between two points on earth separated by 1000 km. The band that will be used as
MF
VHF
VLF
HF
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
A rectangular waveguide (2.29 x 1.02) cm operates at a freq. of 11 GHz in TE10 mode. If the maximum potential gradient of the signal is 5 kV/cm, then the maximum power handling capacity of the waveguide will be
31.11 mW
31.11 W
31.11 kW
31.11 MW
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
A parabolic antenna produces a radiation pattern which is
circularly polarized
highly directional
omnidirectional
linearly polarized
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
Considerable ionization occurs between the range
50 km to 400 km
100 to 400 km
50 km to 250 km
10 to 50 km
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
Gain of isotropic antenna is
10 dB
0 dB
∞
1 dB
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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