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Electromagnetic Field Theory
The skip distance is the maximum distance upto which ionospheric reflection is possible.
True
False
True
False
Answer
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Related Question
Electromagnetic Field Theory
Gradient of scalar field is expressed as
Gradient of divergence of a vector field minus the curl of the vector field.
Maximum rate of increase of scalar function at a point.
Circulation of a vector field per unit area as the area tends to zero.
Outward flux of a vector field per unit volume as the volume about the point tends to zero.
Gradient of divergence of a vector field minus the curl of the vector field.
Maximum rate of increase of scalar function at a point.
Circulation of a vector field per unit area as the area tends to zero.
Outward flux of a vector field per unit volume as the volume about the point tends to zero.
Answer
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Electromagnetic Field Theory
The force experienced by a current carrying conductor lying parallel to a magnetic field is
Bil sinθ.
zero.
BIL.
Bil cosθ.
Bil sinθ.
zero.
BIL.
Bil cosθ.
Answer
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Electromagnetic Field Theory
The hysteresis loop of a magnetic material has an area of 5 cm2 with the scale given as 1 cm = 2 AT and 1 cm = 50 mwb At 50 Hz; the total hysteresis loss is
20 W.
50 W.
15 W.
25 W.
20 W.
50 W.
15 W.
25 W.
Answer
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Electromagnetic Field Theory
The electric field on a plane is decribed by . The field due to
a dipole.
a monopole.
none of above.
a dipole and a monopole.
a dipole.
a monopole.
none of above.
a dipole and a monopole.
Answer
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Electromagnetic Field Theory
A rectangular loop in the x – z plane bounded by the lines x = 0, x = a, z = 0 and z = b is in a time varying magnetic field is given by B = B0 cosωt + ay. Where B0 is constant, ω is angular frequency and ay unit vector in the y direction. Now the emf induced in the loop is given by
abω Bo sinω t.
Bo ω sinω t.
Zero.
ab Bo cosω t.
abω Bo sinω t.
Bo ω sinω t.
Zero.
ab Bo cosω t.
Answer
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