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Electromagnetic Field Theory
XEROX machine is working on
magnetic effect.
peltier effect.
heating effect of current.
electrostatic effect.
magnetic effect.
peltier effect.
heating effect of current.
electrostatic effect.
Answer
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Related Question
Electromagnetic Field Theory
The Kirchhoff’s current law is implict in expression
Divergence of D = ρv.
Surface integral of (j.ds) = 0.
Curl of H = J + (δ D)/(δ t).
Divergence of B = 0.
Divergence of D = ρv.
Surface integral of (j.ds) = 0.
Curl of H = J + (δ D)/(δ t).
Divergence of B = 0.
Answer
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Electromagnetic Field Theory
The two windings of a transformer have an inductor of 2 H each. If mutual inductor between them is also 2 H, then
transformer is an ideal transformer.
turns ratio of the transformer is also two.
it is a perfect transformer.
none of these.
transformer is an ideal transformer.
turns ratio of the transformer is also two.
it is a perfect transformer.
none of these.
Answer
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Electromagnetic Field Theory
In case of surface waves the field strength at a point is directly proportional to
Distance of the point from the antenna
Current of the antenna
Wave frequency
Antenna height
Distance of the point from the antenna
Current of the antenna
Wave frequency
Antenna height
Answer
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Electromagnetic Field Theory
Skin depth is proportional to
√(σ).
Permeability.
1/√σ.
Frequency.
√(σ).
Permeability.
1/√σ.
Frequency.
Answer
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Electromagnetic Field Theory
The attenuation in waveguide above to cut off frequency
Very high
Very low
Infinite
Zero
Very high
Very low
Infinite
Zero
Answer
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