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The parameters measured for a $220V/110V$, $50 \: Hz$, single-phase transformer are:

Self inductance of primary winding $= 45 \: mH$
Self inductance of secondary winding $= 30 \: mH$
Mutual inductance between primary and secondary windings $= 20 \: mH$

Using the above parameters, the leakage $(L_{l1} , L_{l2})$ and magnetizing $(L_m)$ inductances as referred to primary side in the equivalent circuit respectively, are

  1. $5 \: mH$, $20 \: mH$ and $40 \: mH$
  2. $5 \: mH$, $80 \: mH$ and $40 \: mH$
  3. $25 \: mH$, $10 \: mH$ and $20 \: mH$
  4. $45 \: mH$, $30 \: mH$ and $20 \: mH$
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