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Electromagnetic Field Theory

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

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

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Electromagnetic Field Theory
In an iron core coil the iron core is removed so that the coil becomes an air core coil. The inductance of the coil will

 increase.
 decrease.
 remain the same.
 initially increase and then decrease.

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Electromagnetic Field Theory
The drawback of Daltons atomic structure is that, it says

 unique nature of atom.
 most of the volume of an atom is empty space.
 the atoms can neither be created nor be destroyed.
 none of these.

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Electromagnetic Field Theory
Which of the following impedance inversion is obtained?

Short-circuited stub
Balun transformer
A quarter wave line
A half wave line

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Electromagnetic Field Theory
A conductor of length 100 cm moves at right angles to a magnetic field of flux density 1.5 Wb/m2 with a velocity of 50 m/s. The induced emf in the conductor will be

 37.5 V.
 75 V.
 150 V.
 50 V.

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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

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

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MORE MCQ ON Electromagnetic Field Theory

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