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Electromagnetic Field Theory

Electromagnetic Field Theory
The frequency range for satellite communication is

30000 to 300000 MHz
3 to 30 kHz
3000 to 30000 MHz
300 to 3000 kHz

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Electromagnetic Field Theory
The drawback of Daltons atomic structure is that, it says

 none of these.
 unique nature of atom.
 the atoms can neither be created nor be destroyed.
 most of the volume of an atom is empty space.

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Electromagnetic Field Theory
Tropospheric scatter is used with frequencies in the

VHF
VLF
HF
UHF

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Electromagnetic Field Theory
Poyniting vector has the dimensions

 Watt × metre.
 Watts/metre2.
 Watt/metre.
 Watt × metre2.

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Electromagnetic Field Theory
The energy stored in the magnetic field in a solenoid 10 cm long and 4 cm diameter wound with 2000 turns of wire carrying a current at 20 amp, is

 15 joules.
 12 joules.
 24 joules.
 30 joules.

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Electromagnetic Field Theory
The transmitting antennas for lower frequencies (below 500 kHz) are generally

Any of the above
Parabolic reflector type
Horizontal suspended wire type
Vertical grounded wire type

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MORE MCQ ON Electromagnetic Field Theory

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