Gate 2016 EE -Set 2 Question 44

Given rated values, 2kvA, $$V_{1}=100$$ and $$V_{2}=200$$

$$\frac{V_{2}}{V_{1}}=\frac{200}{100}=2=\alpha _{2 winding}$$

$$\left [ KVA \right ]_{auto(max)}=(\alpha +1)(KVA)$$

$$= (2+1)(2)=6 kVA$$