3-44
What happens when the inductance decreases? The end result is that the power in the load (true
power) increases. Why? Look at the following formulas and see how each is affected by a decrease in
inductance.
(True power is covered in NEETS, Module 2—Introduction to Alternating Current and
Transformers.)
As inductance (L) decreases, XL decreases. As XL decreases, Z decreases. As Z decreases, I
increases. Finally, as I increases, true power increases.
This general conclusion can be confirmed by using some actual values of inductance in the formulas
along with other values from figure 3-29.
If the value of inductance is 23 millihenries, the formulas yield the following values:
