




#2173  06/24/01 05:21 PM
Re: Question from the book "Electrical License"

Member
Registered: 10/18/00
Posts: 5545


Top













#2180  09/01/01 06:03 PM
Re: Question from the book "Electrical License"

Member
Registered: 08/27/01
Posts: 155
Loc: Vienna,Ohio, USA

Originally posted by Scott35: Quick answers:
If DC, the total resistance is 7 ohms.
If AC, and one element is in reality some type of Reactance, then total Impedance is 5 ohms.
If AC, and all elements are pure resistance [true power only  no Reactance, or very minimal Reactance], then 7 ohms is the total resistance.
Scott SET I am assuming that they were talking DC, however if the reactance is unknown how do you come up with a 5 ohm impedance and if there is a reactance there should be a corresponding phase angle. ???Or the impedance of a two terminal device is defined as follows; Voltage across the element(v(t))/ current through the element i (t), when v(t) and i(t)have the sink reference relation and when v(t) and I(t)each vary as eEXPst.

Top









