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

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Electromagnetic Field Theory
Two identical circular coils, one closed and another is little split (not enclosed) are placed in an uniform magnetic field which decrease at a constant rate. If the plane to the coils are perpendicular to the field which of the following statements is true?

 An emf is induced in both coils.
 An emf is induced in split coil.
 Joule heating does not occur in each of the coils.
 Equal joule heating occurs in both coils.

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Electromagnetic Field Theory
A rectangular waveguide is a

Tube antenna to transmit and receive electromagnetic waves
Hollow rectangular walled room carrying electromagnetic wave
Hollow rectangular conducting tube through which electromagnetic waves can be propagat-ed
Rectangular conducting wire to propagate electromagnetic waves

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