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Electromagnetic Field Theory
The power gain of a half-wave dipole with respect to an isotropic radiator is
2.15 db
3 db
4.15 db
6 db
2.15 db
3 db
4.15 db
6 db
Answer
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Related Question
Electromagnetic Field Theory
The frequency of the power wave associated with an electromagnetic wave having field as E = e-z/δ cos(ω - zδ) is given by
ω/2π.
ω.
ω / π.
ω/4π.
ω/2π.
ω.
ω / π.
ω/4π.
Answer
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Electromagnetic Field Theory
Unit of electric flux density is
farad / meter.
coulomb.
weber / meter2.
coulomb / meter2.
farad / meter.
coulomb.
weber / meter2.
coulomb / meter2.
Answer
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Electromagnetic Field Theory
Which of the following statement regarding waveguides is incorrect?
At frequencies below the cut off value the wave progresses across the waveguide after total reflections
Waveguides are usually air filled hollow conducting metallic tubes for transmitting UHF and microwaves
Waveguides can handle large power at UHF and microwaves
At waveguide can be coupled to a coaxial cable
At frequencies below the cut off value the wave progresses across the waveguide after total reflections
Waveguides are usually air filled hollow conducting metallic tubes for transmitting UHF and microwaves
Waveguides can handle large power at UHF and microwaves
At waveguide can be coupled to a coaxial cable
Answer
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Electromagnetic Field Theory
The core of coil length is 200 mm. The inductance of coil is 6 mH. If the core length is doubled, all other quantities, remaining the same, the inductance will be
24 mH.
12 mH.
3 mH.
48 mH.
24 mH.
12 mH.
3 mH.
48 mH.
Answer
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Electromagnetic Field Theory
Electric flux in coulombs emanating from any surface of a cube containing C coulombs of charge at its centre is
4πQ / 6ε.
Q / 4π.
Q / 6ε.
Q / 6.
4πQ / 6ε.
Q / 4π.
Q / 6ε.
Q / 6.
Answer
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