List of top Electric circuits Questions on Star-delta transformation asked in GATE EE

A balanced Wheatstone bridge ABCD has the following arm resistances:
$R_{AB} = 1 \text{k}\Omega \pm 2.1% ; R_{BC} = 100 \Omega \pm 0.5% ; R_{CD}$ is an unknown resistance; $R_{DA} = 300 \Omega \pm 0.4%$. The value of $R_{CD}$ and its accuracy is