Q:1. 6volts going in a 12:220v transformeris the output 220v or less, formulas, computations 2. 12v going in 12:220v transformer (1 amp 220VA)core loss, copper loss, eddy current loss etc etc3. 24v going in a 12:220v transformer. is the 220v, lost of power in the input,

#1 - 107.8, assuming 6.0V into a 12.0V:220V transformer, with 98% efficiency. You can find the efficiency of the transformer, by looking at it's specifications. Most range from 98 to 99%. All this depends on the load as well, as a lightly loaded transformer has less loss that a fully loaded one. #2 - 215.6V. In order to get 1A@220V, you will need to supply #3 - 431.2V. 100% over spec, and bound to fail. I do not understand what you mean by is the 220V, lost of power in the inupt,

Q:Transformer short-circuit impedance is big good, or small good? The same capacity, voltage ... solution

Transformer impedance depends on the size of many factors: 1 circuit breaker breaking capacity. Transformer below the power distribution board in a variety of electrical equipment has parameters, you should calculate the short-circuit current according to the impedance of the transformer to verify that these electrical equipment can meet the requirements, the same capacity and variable ratio of the transformer, the impedance of small short-circuit current, Large short-circuit current is small; 2 transformer connected to the large-capacity motor starting voltage. If the transformer load capacity close to the transformer capacity of 1/4 of the motor, should pay attention to check its starting voltage to meet the motor terminal voltage above 70% of the rated voltage. Impedance of the transformer itself is also a large pressure drop, more difficult to meet the requirements; small impedance transformer for the start of the pressure drop better performance; because you do not know how much the transformer capacity, it can not be the absolute conclusion, if the transformer capacity below 1000KVA , The above parameters in 4% and 6% or less, the choice of 4% better

Q:I'm building a ark welder and i know they get very hot, iv seen some people in ''the internet'' submerging their transformers in transmission fluid to keep em cool under excessively heavy work loads.My question is what effects does oil have on wire insulation?And what about the transformer varnish and core insulation wads and paper?

Your right to be cautious. There could be water, metal, plastics in transmission fluid. Used or new. It is designed to help cool a transmission among other tasks. They use oils and other things in power transformers up on power poles. I know cause one near me leaked. A junk yard might sell you that fluid. A letter to the varnish and paper maker might give you a clue.

Q:Transformers have any way of cooling

According to the requirements of the transformer selection guide, the choice of cooling method is recommended as follows: 1, oil leaching from the cold ???31500kVA and below, 35kV and below products; ???50000kVA and below, 110kV products. 2, oil-immersed air-cooled ???12500kVA ~ 63000kVA, 35kV ~ 110kV products; ???75000kVA below, 110kV products; ???40000kVA and below, 220kV products. 3, forced oil circulation air-cooled ???50000 ~ 90000kVA, 220kV products. 4, forced oil circulation water cooling ???General hydropower plant up and down 220kV and above, 60MVA and above products used. 5, forced to guide the oil circulation air cooling or water cooling (ODAF or ODWF) ?????75000kVA and above, 110kV products; ???120000kVA and above, 220kV products; ???330kV level and 500kV grade products.

Q:a lamp is connected to a secondary coil ( 80 turns) of a transformer by long leads which have a resistance of 2.5 ohms. Primary coil( 1600 turns voltage is 220v). the power input to the primary coil is 44w. 1) what is the voltage across the secondary coil2) what is the current across the secondary coil3) what is the electrical power dissipated in the lamp

Assuming perfect transformer. turns ratio 1600/80 20:1 secondary voltage is 220/20 11 volts primary current is 44/220 0.2 amps secondary current is 0.2 x 20 4 amps drop across wires is 4 x 2.5 10 volts. This assumes the 2.5 ohm number is for both leads, not each. voltage across lamp is 11v – 10v 1 volt power in lamp is 1 v x 4 a 4 watts. .

Q:I am building a simple circuit and was wondering what is the difference between a coil and a transformer? Also, in my circuit I have a generator. My generator is made up of a coil and magnets. I would like to know do the amount of turns my coil is determine the power of the generator? When I select the gage wire I am going to use we that determine the amount of volts and current I can gain from my generator?

A transformer is used to transfer power and either step up or step down the voltages. Hence for this purpose, the mutual inductance must be very high. The leakage inductance needs to be minimum. Thats why iron core is used. A Coil is a conductor generally wrapped in a helicoidal form by certain number of turns.

Q:According to your measurements when we have a step-up or a step-down transformer?

A transformer is a device that transfers electrical energy from one circuit to another through inductively coupled conductors—the transformer's coils. A varying current in the first or primary winding creates a varying magnetic flux in the transformer's core and thus a varying magnetic field through the secondary winding. This varying magnetic field induces a varying electromotive force (EMF) or voltage in the secondary winding. This effect is called mutual induction. If a load is connected to the secondary, an electric current will flow in the secondary winding and electrical energy will be transferred from the primary circuit through the transformer to the load. In an ideal transformer, the induced voltage in the secondary winding (Vs) is in proportion to the primary voltage (Vp), and is given by the ratio of the number of turns in the secondary (Ns) to the number of turns in the primary (Np) as follows:- Ns/Np Vs/Vp ---------------------(i) By appropriate selection of the ratio of turns, a transformer thus allows an alternating current (AC) voltage to be stepped up by making Ns greater than Np, or stepped down by making Ns less than Np.

Q:Can dry transformers and distribution cabinets be placed in the same room?

Yes. Dry-type transformers are usually placed in the room with a shell, low-voltage cabinet is with the dry-type transformers together. The general practice is to flush the cabinet. And then connect the transformer with the low voltage cabinet directly in the cabinet to go. Outside can not see the connection of copper.

Q:I am very dissapointed because i lovvvve transformers but how can the movie go on without her? I know i know. the show must go on. but cmon. i hope they pull it off., does anybody know why megan fox isn't going to be in it.

Because she said the director wanted to be Hitler, and a bunch of other mean things about him in interviews. Three men who worked as crewmen wrote a huge letter about how horrible it was working with her, and how spoiled rotten she is. The director apologized, and despite the comparison to Hitler, he stated he was still hoping she'd be in the third one. But, she once again went into an interview complaining about how hard he was to work with, so he cut her from the movie. So, basically, it's her own fault. Plus, she can't act, so it's not really going to be that much of a loss. I just hope he can pull it off considering one of the main points to the second one was Sam telling her he loved her.

Q:1.Is there going to be a Season 4?2.If there isn't,then is there going to be a new Transformers series?

That would suck sooooo bad if it is cancelled. All that build up in the first season with super villains and no Megatron and like, 3 Decepticons till the end of season 2 for what! To take it all away just as its getting good and finally setting up a full on Autobot Decepticon war There better be a season 4 or this series will go in the forgotten bin with Robots in Disguise as another series that took forever to set just for 1 big battle then that's the end. But if it is the end then that will teach the writers for holding out on what fans really want. I can not sit through season 1 or 2 again, except the season 2 finale.