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Electromagnetic Field Theory

Electromagnetic Field Theory
The Biot-savarts law is a general modification of

 Lenzs law.
 Amperes law.
 Kirchhoffs law.
 Faradays law.

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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

Orbiting satellite
Geostationary satellite
Passive satellite
Active satellite

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Electromagnetic Field Theory
The inductance of a long solenoid of length 1000 mm wound uniformly with 3000 turns on a cylindrical paper cable of 60 mm diameter is

 3.2 mH.
 32 mH.
 3.2 H.
 3.2 µH.

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Electromagnetic Field Theory
Conductor is static and the field is varying then emf will be induced. This principle is called

 static induced emf.
 dynamically induced emf.
 none of these
 virtually induced emf.

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Electromagnetic Field Theory
In order to minimize loss due to hysteresis the magnetic material should have

 high hysteresis coefficient.
 small B-H loop area.
 large coercivity.
 high resistivity.

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Electromagnetic Field Theory
A waveguide operated below cut off frequency can be used as

Phase shifter
An attenuator
An isolator
None

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MORE MCQ ON Electromagnetic Field Theory

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