Q:I want you guys to tell me if the movie transformers its a good movie or not? Why?Thanks, See Ya!

First off, I did NOT want to see it. I'm not really into cars and all that kind of stuff. But my husband rented it last night and we watched it. And I will say I was surprised. I actually REALLY enjoyed it. It has a really good storyline and some pretty good acting as well! The effects are incredible too! Overall, it was a very good and entertaining movie! You should definately watch it. You won't be disappointed

Q:1. Which type of connection would be the best to use at the beginning of a power transmission line? Which connection would be the best to use at the end of a power transmission line? Explain.2. In wye delta and wye wye transformation, what line voltage should be applied in order to have all transformer windings operating at their rated voltage?3, how do you calculate the percentage of the line voltages?

1. The transformers at both ends of the transmission line are normally connected wye with the neutral grounded. This is done to provide a 'zero sequence source' for two reasons a. to provide source of ground fault current to a fault on the transmission line to permit that fault to be detected. b. to constrain the elevation of voltage on the healthy phases of the transmission line in the event of a ground fault In order for that wye connection to work, it is usually necessary that the transformer also contain a delta winding. 2. The voltage should be the rated line-to-line voltage of the winding. 3. The line-to-neutral voltage is equal to the line-to-line voltage divided by the square root of three. I don't understand what you mean by 'percentage of the line voltages'.

Q:Devices that convert the car battery's 12 V DC into 110 V AC are easily available. The conversion from 12 V DC into 110 V AC is done in 2 steps. One circuit in the device changes DC into AC and transformer changes the voltage. Does it matter which step is done first and why?Any help would be awesome! Thanks!

transformers do not change DC values. Do not hook a transformer to DC. Depending on how the connections are made, it may be a short circuit.

Q:I loved transformers as a kid, but recently, I've rediscovered them. Now I want all of them again, especially Masterpiece editions. Yeah, they're cool, but wtf?!? Why do I want them so bad? I'm looking at a FOC Grimlock that I'm about to customize and resell. He doesn't know. Why do I want these toys as an adult man?!? Yes, I have a hot wife and kids and a decent career, so shut up with the dumb(er) stuff. Thanks!

As long as it doesn't interfere with the important things in life, I don't see anything wrong with recapturing some of your youth with the toys you once loved. I mean, you (and I) *are* the target audience for the Masterpiece Transformers--at $100-$200 a pop, with fairly complicated transformations, and specifically designed to look like the G1 cartoon versions of the characters, these Transformers aren't for today's kids, they're for us '80s kids who now have disposable income and will spend the money for the definitive version of the G1 characters we grew up with. That's why we want them--they're made for us to want. :D Every guy has a hobby (and probably more than just one). Collecting fancy Transformers really isn't that different from, say, souping up cars, or putting together a home theater, or collecting Blu-rays, or whatever else guys our age are into. And besides, if you get over your Transformers bug, you can always sell or pass on your collection to someone else. Over the years I've picked up the Masterpiece versions of Optimus Prime, Megatron, Starscream, and Grimlock, and more recently I've sold off all of them except Optimus (yeah, I'm going to hang on to him); even though they were all loose, I actually wound up selling them for more than I paid for them new (that's how prized some of these Masterpieces are).

Q:How do transformers work detailed descriptions please. Also how are the voltages stepped up or down?

Transformers can e used only for A.C the fluctuating current in the primary coil produces a magmetic field.this magnetic field by mutual induction makes a current in secondary coil The no:of turns in primary and secon determines thr rating of transformers more the no:of turns more magnetic field will be produced in primary and less the no:of turns in the secon lesser will be the current induced and vice versa For more details visit

Q:Can transformer be used to change direct current e.m.f? If not , why?

The normal one with coils can't do DC, but in college we build one that used magneto-hydrodynamic energy that did DC to DC. A closed circuit pipe filled with mercury. A large magnet on one side, an electric current passed through the mercury. The mercury is thus pumped around the circuit. At another magnet, electrodes take current out of the moving conductor (the mercury). Its DC to DC. Only useful in a college lab to prove a point, but the physics works.

Q:Who knows the density of the transformer oil is how much?

Transformer oil, also known as insulating oil, refers to the mineral-type insulating oil from the natural diameter mixture of petroleum refining. Its main components are alkanes, cycloalkyl saturated hydrocarbons, aromatic unsaturated hydrocarbons and other compounds. Commonly known as Fangpeng oil, light yellow transparent liquid, the proportion is 0.895 * 10 ^ 3kg / m?, freezing point <-45 ℃. Transformer oil is widely used in transformers and circuit breakers and other equipment.

Q:i have been looking at transformers and i wanted to know a few things. will they do dc current? do they just add x amount of volts or do they multiply by x or just change to x? also there is a sort of container that goes around them is that carbon???? it goes all the way around and then through

Transformers won't work on DC current, as it is absolutely necessary to have a rapidly forming and collapsing magnetic field to induce the voltage in the secondary winding. It doesn't have to be a sine wave; If you have a DC voltage, you can convert it to a square wave with a contact modulator or solid state device, run it through a transformer to get a higher or lower voltage, then rectify and filter back to DC. For a transformer, the voltage in vs voltage out is just the ratio of the number of turns in the primary vs secondary. If the secondary has 10 x as many turns as the primary, you will get 10 x the voltage out (but at 1/10 the current). Carbon is not usually involved, all the ones I've seen had cores of thin stamped sheets of silicon steel stacked together to minimize eddy currents. For very high frequency operation, ferrite cores are used, these look like black ceramic (maybe this is what you are thinking is carbon?)

Q:I just purchased a little halogen spotlight lamp with an Class II transformer that converts 110v-120V to 11.5V. When I put my ears about a 12 inches from the transformer near the wall outlet, I hear a little buzzing or humming noise. Is this normal or is there something wrong?

A transformer creates a magnetic field that varies at the rate of the line voltage (60 or 50 cycles per second). If there is something in that field that is magnetic, it will be pushed back and forth at that rate, and if it can move, it will create a buzzing sound. Almost all transformers produce a little bit of sound, because the core is made up of layers of magnetic material that are glued together. It's not anything to worry about, just a nuisance.

Q:1.) What is the function of a transformer?a.) It is a device that can change the voltage of an AC supply.b.) It can change a low voltage supply into a high voltage supply or vice versa.c.) It is a device used mainly to change AC into DC.d.) A and B are correct.2.) What is the function of a transformer at a power station?a.) To convert DC into ACb.) To produce very high voltagesc.) To produce the currents in the power linesd.) None of the above.

Sorry but I don't know about this