Expression for saving of copper in a transformer

Q.  If K is the transformation ratio of step up autotransformer and Wtw is the total weight of copper in two winding transformer. Then the saving of copper is given by
- Published on 29 Oct 15

a. K Wtw
b. Wtw/ K
c. Wtw/ K ∧ 2
d. K2 Wtw



  • anil   -Posted on 07 Nov 17
    I think answer option A should come

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