Transformer Emf Equation Ppt . The constant “k” is known as voltage transformation ratio. Circuits are separated, as depicted in figure 2, the steady state loop equations are simply: PPT Transformers PowerPoint Presentation, free download from www.slideserve.com Delivery of a good speech along with the given slides would make the greatest of combination. Construction, types of transformers, emf equation, concept of leakage flux and leakage reactance, operation of transformer under no load and on load, phasor diagrams, equivalent circuit, efficiency, regulation and all day efficiency; The main principle of the emf equation of transformer is presented below.
Why Would A Neutral Wire Have Voltage. When the wire length from the breaker panel to the service outlet is long and the connected equipment is pulling a large amount of current, the resistance in the wire will cause a voltage drop along the neutral wire. Again, if the neutral point is earthed with the ground then the ground voltage will act as the reference voltage.
electrical Why am I measuring decreased voltage between from diy.stackexchange.com
If the neutral wire is damaged or has a high impedance fault, the voltage in the neutral can go up to a dangerous level in the branch circuit. In this case, both sides of the light (hot and neutral) are the same, thus no potential difference (voltage), and the bulb does not light up. When considering voltages it is important to refer to the reference point.
If You Have An Old Distribution.
With power distribution the reference point for the consumer is ground. When considering voltages it is important to refer to the reference point. Keep in mind however, that even though the neutral wire might be connected to earth, this doesn't mean that it is actually at earth potential, because a return current might be flowing in the neutral wire, and due to the resistance in the wire this will cause a voltage at your end of the neutral wire.
Voltage Is Potential Difference, And Current Flows Because Of Voltage.
To the extent there is current travelling along a neutral wire in the home, resistance in that wire (however small) will cause a voltage drop along the route. In a normal situation with the neutral path intact, you would have 120 volts measured from across the light bulb or the receptacle. Even though this question lacks a lot of information, (such as what are you testing and how you are testing it), however i will explain a few situations where you are sure to get a 120 volt reading on a neutral wire.
Again, If The Neutral Point Is Earthed With The Ground Then The Ground Voltage Will Act As The Reference Voltage.
120 volts on a neutral wire note: When the system changes (which is normal), the loads may become unbalanced, making your neutral wire have voltage. Why does my neutral wire have voltage?
A True Neutral Will Have No Voltage On It.
Try disconnecting/turning off all other loads on that circuit. This should make the neutral voltage disappear. So if the voltage is zero, how can current flow through the neutral wire.
When The Wire Length From The Breaker Panel To The Service Outlet Is Long And The Connected Equipment Is Pulling A Large Amount Of Current, The Resistance In The Wire Will Cause A Voltage Drop Along The Neutral Wire.
The voltage you are seeing on the neutral wire is conducting through that other load from the hot. If you open that while voltage is still being supplied on the line side, you can let the smoke out of electronics. I hope this helps, dave
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