Recent content by zgozvrm

The easy answer is: 231' of water (measured vertically) creates 100 psi, no matter what the shape of the hose or tank. (Or, more simply, 2.31' of water equals 1 psi). So, if your tank is half full (filled to the 0.5m level), that would mean that at 1m from the ground, you'd have a vertical...

sophie: I don't think you followed what I was saying. I will make some diagrams to clarify. ... and supernova? What about you?I will have to continue this later...

Oh, and what "certain things" am I supposedly avoiding so that I can simply be correct? If am ignoring something, I would like to know what it is. I thought I had been pretty thorough.

super: Yes, I remember that. I don't recall the discussion, just the argument. And the same could be said about you (both then and now) ... that you simply want to be correct at any cost. That's just another way of saying, "I'm right and you're wrong ... you just won't listen to me." Or as a 3rd...

Just so you know... I work with signals and signal measurement like this all the time (and have been doing so for over 20 years), so I do know what I'm talking about in this regard. Granted, what we're talking about is a minor technicality to the "casual" electrician but there IS a...

I've always maintained that it's a matter of perspective. The difference is that I'm saying that the perspective doesn't change the direction of the vector, it just make the vector appear differently; it's still the same, unaltered vector. Once again... if I look at a train from one side of the...

Suppose you had 2 separate, identical single phase transformers, each having a secondary voltage of 120 volts. Now, let's assume that a single 480 volt source is connected to the primary of each transformer (identically connected)... The primaries are obviously in phase with each other since...

It absolutely DOES apply... See my example in post #57 which compares the AC situation we are talking about with its DC equivalent.

First of all, they would only be 180 degrees out of phase depending on your point of view. They would have to be completely in synch with each other, which (unless they came from the same source) would be difficult without other equipment to adjust for minor offsets in speed. To answer your...

There has to be 2 wires to be useful, otherwise you have no circuit. If we take one wire from one of the hot bus bars in a 120/240 split-phase panel, and another wire from the other hot bus bar, we are taking the full voltage across the SINGLE transformer winding and would have 240 volts. See...

If you connect your "measuring device" to the terminals of each generator at the same time (in order to make a comparative measurement), you are, in fact, making a physical connection.

No, the phase angle would be the angle between the arrows, regardless of any other chosen reference point. To measure the angle between any 2 vectors (my arrows, for instance), you must connect their tails, then measure the angle between the vectors.

Of course, you are correct ... I got ahead of myself a bit there! For 2-phase to be useful, the phase difference would have to be something other than 0 or 180 degrees; the vectors couldn't be "in line" with each other. The ideal offset would be 90 degrees which would generate the most...

Sophie and Jim: I'm not sure if your last post was directed to me, but for the most part, it sounds like we are all in agreement. I don't agree with Jim's "thought experiment" though... A single phase voltage, by itself, has no "direction" and therefore no phase angle. So, the...

I can't tell if you're agreeing with me or arguing with me. Looking at something from a different perspective doesn't change its direction (or magnitude). A north-bound train goes north, regardless of which side of the tracks you look at it from ... even though it appears to travel from...