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Electromagnetic Field Theory

Electromagnetic Field Theory
The electric flux is given D = (2y2 + z) Ix + 4xy Iy + x Iz C/m2. The volume charge density at point (-1, 0, 3) is

 - 2 C/m3.
 - 8 C/m3.
 0 C/m3.
 - 4 C/m3.

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Electromagnetic Field Theory
RF inductor are characterized by

 high current rating and high resistance.
 low current rating and low resistance.
 low current rating and high resistance.
 high current rating and low resistance.

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Electromagnetic Field Theory
When a current carrying conductor is brought into magnetic field, the force that moves the conductor depends upon

None of these
The direction of the conductor
The weight of the conductor
The value of current

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

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

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Electromagnetic Field Theory
In a perfect conductor the incident and reflected wave combine to produce

None of these
A standing wave which is not progressing
A stronger reflected wave
A stronger incident wave

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Electromagnetic Field Theory
A satellite that simply reflect back the signals from one region of the earth to the other region is known as

Active satellite
Passive satellite
Orbiting satellite
Geostationary satellite

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