khonkosal32 khonkosal32

21-12-2022
Physics

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2. A two-winding transformer with a laminated core is shown in the Figure. The winding with N1=200 turns is connected to a voltage to produce a flux density in the core B=1.2Âsin377t. The second winding, with N2=400 turns, is left open-circuited. The stacking factor of the core is 0.95, i.e. the core occupies 95% of the gross core volume. The gross cross-sectional area of the core is 25cm2 , and ȝr for the core is 10,000. The core length is lc=90cm. a) Determine the rms value of the applied voltage E1. b) Determine the current in the winding. c) Determine the rms voltage Er induced in the second winding.

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