Final answer:
In a balanced, three-phase Y-Δ system, each phase supplies 1600 VA of apparent power when the total apparent power supplied is 4800 VA.
Step-by-step explanation:
In a balanced, three-phase Y-Δ system, the total apparent power supplied is given as 4800 VA.
This means that the sum of the apparent power in each phase is 4800 VA. Since the system is balanced, the apparent power in each phase is equal.
Therefore, the apparent power in each phase is 4800 VA divided by three, which is 1600 VA. This is the power supplied by each phase.