Reactive power Definition and 56 Threads

  1. N

    Understanding Reactive Power in AC Circuits: Impact of Capacitors on Total Q"

    Assume a single-phase AC voltage applied to a series circuit with a certain impedance. Because of the real and imaginary part of the impedance, we get both real and reactive power. Now, if we were to connect a capacitor in parallel with the circuit, and if this capacitor supplies a certain...
  2. M

    How does reactive power oscillate back and forth?

    Hello, i am trying to understand the concept of active /reactive /complex power and am having some trouble understanding how the reactive powere 'oscillates back and forth between inductor and source'. Ok, let's say i have a pure inductive load, i know that the power consumed is 0, and i...
  3. A

    Reactive Power and voltage ratings

    Hi, Can someone please explain to me how you can get higher RMS voltage ratings across components than the supply voltage and how VAR ratings can become huge? Indeed what really is reactive power? I've been introduced to it for years but have never fully understood it and I could do with...
  4. N

    Why is inductive reactive power always represented at 90 degrees?

    My professor made this statement: "the power dissipated by an inductor will always be purely reactive and represented at 90 degrees" (we label real power as a phasor at 0 degrees, inductive reactive power at 90 degrees and capacitive at -90) Why is this? I made a little example with a...
  5. R

    Difference between reactive power and reactance

    if some one could help me understand the difference between the math used to find the reactive powers voltamps and reactances ohms
  6. A

    What's the difference between true power and reactive power?

    what's the difference between true power and reactive power? I'm confused at these 2 terms...
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