Q:I am installing a humidifier. It comes with a 120vac to 24vac transformer to be installed. The transformer has a label on it that says install in electrical box only. One side of the transformer is designed to screw into an electrical box knockout and has leads coming through the middle of this for connection to the 120VAC input.Is the transformer supposed to be screwed into the electrical box on the outside or the inside. At first, I assumed inside but this would result in my connection leads being on the outside. ThanksBill

your line voltage leads should be inside and connections to low volt outside,but neither side needs to be exposed to the weather or an open area,if someone touches the leads evern though its 24 volts it still hurts,and it doesnt need to get wet

Q:A transformer has a 100-turn primary coil and 1000-turn secondary coil. The primary is connected to a 120-V AC source and the secondary os connected to an electrical devic with a resistance of 1000 ohms.what will the voltage output of the secondary be?what current flows in the secondary circuit?what is the power in the seconday coil?what is the power in the primary coil ?what is the current drawn by the primary coil?

The ratio of voltages in the windings of a transformer is the same as the ratio of turns of wire in the windings, so in this case the voltage ratio is 1 to 10. If you connect the primary to a source of 120 volts, the voltage induced in the secondary winding is 10 times as much, or 1200. If a (pure) resistance of 1000 ohms is connected to the secondary winding, the current (I) that flows is found by Ohm's Law: I E/R. Since E is 1200 volts and R is 1000 ohms, I 1200 / 1000, or 1.2 amperes. The power P in the secondary coil is found by multiplying the voltage by the current, so P 1200 times 1.2, or 1440 watts. Transformers are very efficient, and the power in the primary coil is essentially the same as that in the secondary, or 1440 watts. The current drawn by the primary coil is found by dividing the power by the voltage: 1440 divided by 120 12 amperes. Hope this answers all parts of your question.

Q:I am in dire need of getting a tablet within the next month (due to school work and my one hour long laptop battery life) and I was considering either getting an Ipad 2 or a Transformer Prime. I want something simple yet powerful and I don't want any hassle with navigating the tablet. I already am accustomed to using android (Having a Droid Razr and Droid 1) however I'm not sure if Android is best with getting a tablet. Please Comment!

Ahh two very highly rated tablets that each have their own pros and cons I'm an owner of the Transformer, and I love it. It's got very good touch response. Camera quality is poor, though. If the camera doesn't matter to you, then that shouldn't be a problem. With the docking keyboard on, you've got basically a netbook that can play apps. The Transformer's keyboard obviously makes it a lot easier to type, and since you're looking for a tablet for schoolwork and are already accustomed to Android's interface, the Transformer is a nice bet. iPad 2 is in my opinion highly overpriced. It has slightly smoother touch response and a much higher quality camera. But it does not have a docking keyboard. The touch response and camera quality are the only two things that make the iPad 2 better than the Transformer. Of course, you are also accustomed to a wider app market with the iPad. Since you are looking at a tablet for schoolwork, I would say the Transformer is right for you. (I typed that whole thing with my Transformer's keyboard!)

Q:If you have two 12 volt transformers and if we connect their hot wires together does the voltage become 24 or 12 volts?

There is actually a phasing to the transformer windings. If you connect them in series with the phases adding (both hit + 12 at the same instant) you get 24 volts out. If you connect with the phasing wrong (one hits +12 while the other hits -12) and put them in series the output will be zero volts (and they might overheat). If you connect them in parallel with the right phasing you will get 12 volts and the amperage will add to give you the sum of their amperage. If you connect in parallel with the phasing wrong you will get zero output voltage (and the danger of overheating). If the transformers do not make their phasing clear put a voltmeter on the output and briefly turn on the primary while seeing if you get zero or the voltage you want. If the phasing is wring swap the wires of one transformer around and check with the meter again.

Q:I read comments on youtube saying avatar cg looks like computer games.I liked avatar cg. transformers cg looks more real but I don't think movies always have to look more real.

Avatar is really a wonderful epic movie. I love the CG cause they made the characters look more like the real actors, the place looks like an amazing paradise, and the story really touches my heart seriously although I know it's fiction. Plus the battle at the end is awesome, it's like when you watch Star Wars because you get to see these incredible creatures fighting machines and the human race

Q:I own a 1973 house and want to do a little remodeling. It has a 25foot hallway with 3 (old fashioned) ceiling lights that I want to replace with recessed lights. I went into the attic to look over things - looks like each e-box is made of bakelite which makes sense due to its age, attached to a rafter. However, there appears to be a transformer with what looks like low voltage wires -redwhite- on top of the box.Can a qualified electrician please tell me what this is and do I need to worry about it when I retrofit to recessed cans?

I'm not an electrician, but I have a few ideas. First, Do these lights use standard incandescent bulbs, or something else? If they are plain ole incandescent bulbs, I'm left wondering what is going on. If I understand you correctly, each of the three lights has an old bakelite electrical box with its own transformer, with regular wiring coming into it, and low voltage coming out of it feeding one light fixture below. If thats the case, then you are going to remove the transformers along with the fixture. However, if its one transformer that feeds the three fixtures, then you have a low voltage light system and will want to remove the fixtures and transformer and run new electrical wire (Romex) to each of the three new fixtures. The previous answer was correct in that most houses only have one low voltage transformer that powers the doorbell buttons and chime(s). Some homes back then had intercom systems and/or security systems that would require a transformer. Another point: check the smoke detectors. If they are over ten years old, replace them. They only work for about 10 years (even the new ones).

Q:Power industry, Taiwan change, Taiwan, transformers in the concept of what is the difference? Also, what does the measurement point mean? First into this line, hope you brothers help.

Transformer refers to equipment; Taiwan change is installed in a place of the transformer, is specifically installed, running a transformer; Taiwan area refers to the regional range of variable power supply. Metering point is for the two sides to determine the installation of electric energy meter position, in general, the measurement point should be set at the demarcation point of property rights.

Q:The specific steps and procedures for installing the transformer

Oil-immersed or dry-type transformers are generally installed by the engineering team or factory installed do not know how much capacity your transformer is electronic or industrial power system

Q:I want to start watching Transformers Prime on TV, but I want all the backstory of just THAT universe, because i know there are MANY Transformer universes from Bay to Generation 1 to this. I just want to know what to read and watch before watching this series. Thanks!

It's called the Aligned universe.

Q:Go transformers

I'll have to say Transformers. Here's a comparison: The Storyline: SPIDER-MAN 3 Peter starts to enjoy being a hero, to the point of risking the people he loves (including his fiancee MJ) just to satisfy his ego and wants. In the end, he almost lost MJ (again, as with the first 2 films) and reunited with his best friend (who died anyway). TRANSFORMERS A group of robots called Decepticons are looking for the AllSpark, a device from their planet Cybertron that can turn objects into robots as well. Luckily, Autobots led by Optimus Prime are here on Earth to save the day. Winner: SPIDER-MAN 3 Action Scenes to watch out for: SPIDER-MAN 3 Sandman's attack on the city, and the final battle between Spidey and Venom (with the steel bars) TRANSFORMERS The first Decepticon attack on a military base, the scorpion-like Decepticon attacking a Middle East country, and the chase scene between the yellow Camaro and the police car. Winner: TRANSFORMERS The actors: SPIDER-MAN 3 Tobey Maguire looks silly as a hero gone bad. Thomas Haden Church was under-utilized. And Kirsten Dunst's performance was lazy. TRANSFORMERS Shia LaBeouf! Megan Fox the bombshell! Shia LaBeouf! This lead actor carried this movie throughout the end, with his charm and humor. Winner: TRANSFORMERS