# GATE Papers >> EEE >> 2016 >> Question No 59

Question No. 59
A single-phase, 22 kVA, 2200 V/ 220 V, 50 Hz, distribution transformer is to be connected as an auto-transformer to get an output voltage of 2420 V. Its maximum kVA rating as an autotransformer is

Solution of Question No 59 of GATE 2016 EEE Paper

$22\;\mathrm{KVA},\;2200\;\mathrm V/220\;\mathrm V,50\;\mathrm{Hz}$

Distribution transformer is to be connected as on

auro transformer to get an output voltage of 2420 V.

$(\mathrm{kVA})_\mathrm{maximum}$ as an auto transformer = ?

as voltage rating $=\mathrm{is}\;2420\;\mathrm i.\mathrm e.(2200+220)\mathrm V$

$(\mathrm{kVA})_\mathrm{auto}=({\mathrm a}_{2\mathrm{winding}\;}+1)\times{\mathrm{kVA}}_{2\mathrm{winding}}$
$(\mathrm{kVA})\mathrm{auto}\;=(10+1)\times22=242$