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Show diagrammatically two different arrangements used for winding the primary and secondary coils in a transformer. Assuming the transformer to be an ideal one, write expressions for the ratio of its (i) output voltage to input voltage. (ii) output current to input current in terms of the number of turns in the primary and secondary coils. Mention two reasons for energy losses in an actual transformer. |
Answer» Solution :TWO different ARRANGEMENTS used for winding of primary and secondary coils in a transformer are shown in Figs. 7.35 (a) and (b) given below For an IDEAL transformer (i) `V_("output")/I_("input") = N_(s)/N_(p)` or (ii) `I_("output")/I_("input") = N_(p)/N_(s)` Two possible reasons for energy loss in an ACTUAL transformer are : (i) EDDY currents, and (ii) hysteresis. |
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