Final answer:
The magnitude of the line voltage at the terminals of a balanced Y load can be determined by considering the relationship between the line voltage and the phase voltage. In a balanced Y load, the line voltage is equal to the square root of 3 times the phase voltage.
Step-by-step explanation:
The magnitude of the line voltage at the terminals of a balanced Y load can be determined by considering the relationship between the line voltage and the phase voltage. In a balanced Y load, the line voltage is equal to the square root of 3 times the phase voltage. This means that the line voltage is higher than the phase voltage.
For example, if the phase voltage is 120 volts, then the line voltage would be approximately 208 volts.