A wye-connected load consists of three impedances of 12+j3 ohms each. The line voltage driving the load is 208V.

What is the phase voltage?
What is the phase current?
What is the apparent power delivered to the load?
What is the power factor?
What is the real power consumed by the load?

This is the last problem on my HW. =/ Idk how to start it.

To solve this problem, you can use the formulas and concepts of AC circuit analysis for wye-connected loads.

1. Phase Voltage:
In a wye-connected load, the line voltage is given as 208V. The phase voltage can be calculated by dividing the line voltage by √3 (square root of 3). Therefore, the phase voltage is:
Phase Voltage = Line Voltage / √3
= 208V / √3

2. Phase Current:
The phase current can be found using Ohm's Law. Since the impedance of each element in the load is given as 12+j3 ohms, you can use the formula:
Phase Current = Phase Voltage / Impedance

3. Apparent Power:
Apparent Power is the product of line voltage and line current. For a wye-connected load, the line current is equal to the phase current. Therefore,
Apparent Power = Line Voltage * Line Current

4. Power Factor:
The power factor can be calculated as the ratio of the real power (P) to the apparent power (S).
Power Factor (PF) = P / S

5. Real Power:
Real Power is also referred to as active power and is the actual power consumed by the load. Real Power can be found using the formula:
Real Power = Apparent Power * Power Factor

Given the above information, let's calculate the values.

Phase Voltage:
Using the formula, phase voltage = 208V / √3

Phase Current:
Using Ohm's Law, phase current = phase voltage / impedance

Apparent Power:
Apparent Power = Line Voltage * Line Current.
Since Line Current is equal to the Phase Current, you can use the formula: Apparent Power = Line Voltage * Phase Current.

Power Factor:
Power Factor (PF) = Real Power (P) / Apparent Power (S).

Real Power:
Real Power (P) = Apparent Power * Power Factor.

By substituting the values into these formulas, you will be able to find the answers to the given questions.