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Electromagnetic Field Theory

Electromagnetic Field Theory
The frequency range for satellite communication is

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

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Electromagnetic Field Theory
Which is the major factor for determining whether a medium is free space, lossless dielectric or a good conductor

 Attenuation constant.
 Reflector coefficient.
  Loss tangent.
 Constitutive parameters.

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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

 15 W.
 20 W.
 50 W.
  25 W.

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Electromagnetic Field Theory
The magnitude of force acting on a current carrying conductor placed in a magnetic field is independent of

 current flowing through the conductor.
 length of conductor.
 flux density.
 cross-sectional area of conductor.

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Electromagnetic Field Theory
A magnetic circuit requires 800 AT to produce a certain quantity of flux in a magnetic circuit. If its excitation coil has 100 turns and 5 Ohm resistance, the voltage to be applied in exciting coil is

 60 V.
 80 V.
 8 V.
 40 V.

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Electromagnetic Field Theory
inductance (L2) in parallel without mutual coupling will be

 20 mH.
 15 mH.
 5 mH.
 10 mH.

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MORE MCQ ON Electromagnetic Field Theory

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