Problem 85-2    Source:   Adapted from the Exercise 11.13 - page 271 - NILSSON, James W. & RIEDEL, Susan A. - Book: Circuitos Elétricos- 5ª Edição - LTC Editora - 1999.

Use the two wattmeter reading of the previous problem to calculate the total reactive power received by the load.

Solution of the Problem 85-2

Recalling the values measured by wattmeters:

Thus, using this data, the total reactive power is:

Another way to solve is by using the equation:

Performing the calculation:

So the two forms lead to the same result.