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Electromagnetic Field Theory

Electromagnetic Field Theory
A square corner reflector is used in

Radio astronomy
All of these
Tv broadcast
Point to point communication

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Electromagnetic Field Theory
Fleming's right hand rule may be applied to an electric generator to find out the direction of

 magnetic field.
 induced emf.
None of these
 rotor rotation.

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Electromagnetic Field Theory
When a wave is incident from the more dense into a less dense medium at an angle equal to or exceeding the critical angle, the wave suffers total internal __________ .

None of these
Reflection
Transmission
Refraction

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Electromagnetic Field Theory
A coil of 300 turns is wound on a non-magnetic core having a mean circumference of 300 mm and a cross sectional area of 300 mm2. The current of 3 A will be

 37.68 µH.
 113.04 mH.
 113.04 µH.
 37.68 mH.

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Electromagnetic Field Theory
A pure inductor when connected across 220 V, 50 Hz supply consumes 100 W. From the above statement it can be concluded that

 the inductor is non linear.
 the inductor has ferrite core.
 the above statement is false.
 the inductor is made of thin wire.

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Electromagnetic Field Theory
A vector field A = p In is given in Cartesian coordinates. In cylindrical coordinates it will be represented as

 A = cosφ Ir + sinφ Iφ.
 A = cosφ Ir - sinφ Ir.
 A = cosφ Ir.
 A = sinφ Ir.

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