Correct Answer - Option 2 : 30 μF
Concept:
When all the capacitance in a delta connected capacitors are equal, the equivalent capacitance in case of equivalent star connection will become three times.
When all the capacitance in a star connected capacitors are equal, the equivalent capacitance in case of equivalent delta connection will become (1/3) rd.
Calculation:
For a transmission line, three delta connected capacities each having 10 μF capacitance.
If converted to equivalent star connection, the value of each capacitance = 3 × 10 = 30 μF