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i need suggestion for 2nd sem electrical.Please send

Techno India Salt Lake 4th year students. When will they stop disrupting the normal classes. It is high time they should be punished along with their authority for spoiling the career of their juniors.

sir please upload power electronics material and previsious year question and answer

if we use a polariser then a wave lies to one of its axis which is parallel to transmission axis of polariser...ie.,in a light there is electric field and magnetic field which is perpendicular to each other,at instant if electric field is allowed to pass through polariser then component of magnetic field along transmission axis will be zero.... as we know light is having electric field and magnetic field within itself. If there is no magnetic field with electric field then how we can get a light after the polariser?

plz suggest a book of embeded system(6th sem) according to WBUT syllabus....or upload @ study material/syllabus tab..