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It can be bare (without varnish) but they should not touch each other as this will create a short circuit.
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∙ 12y ago
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Why a two winding transformer is used instead of single winding transformer?
You need two windings because that is the purpose of the transformer - to convert one voltage into another. If there were only one winding, it would be an inductor, or a special case called an autotransformer, but that is still "sort of" two windings.AnswerThe major advantage of a two-winding transformer (a 'mutual transformer') over a single-winding transformer (an 'autotransformer') is that a two-winding transformer provides electrical isolation between the secondary and primary circuits. This is very important for safety reasons and there are many circumstances in which the use of an autotransformer is not permitted.
How does a transformer change voltage and current?
A welding transformer uses the alternating current supplied to the welding shop at a high voltage to produce the low voltage welding power
Why do you measure the winding resistance with a multimeter?
Actually, measuring winding resistance with a multimeter is an iffy situation at best. This is because the multimeter will not tell you if one of the turns is shorted, causing Q to drastically suffer, it will really only tell you if the winding is open, or if it is shorted to something it should not be shorted to, such as the frame. This is especially true for larger windings, in larger transformers and motors, because their DC resistance is so close to zero that you might not be able to tell if they are shorted or normal. Using a multimeter is a good start, to make sure that basics are covered, and it might tell you if the winding is dead shorted, but you need to know for sure what the expected DC resistance is, and you need to know that you multimeter is very good in the low Ohms scale.
Why do you need heaters in electrical motors?
To prevent the short circuit current causing the moisture at the motor winding. So, we need the heaters in the electrical motors which is used at the humidity environment to take off the moisture by using heating effect.
Do I need tertiary winding in a auto transformer with vector YNynO?
Depends, do you need to connect auxiliaries/generator/capacitor/reactor to tertiary? If not you may consider to not to use tertiary. The 3rd harmonic current will become an issue then. The phase to ground Isc will be lower.
One induction motor winding is burned and still showing equal winding resistance and low insulation resistance value?
you probably have a winding to winding short. you need an a pluse tester or an ac ohmmeter each coil is slipped into a slot lined with fish paper (cambric) each wire in the coil is insulated with a thin layer of varnish with formed coils rather them mush coils it can be a one turn short mush coils give several turns it acts like a transformer with a short in the secondary
Mobius coil winding for interdeminisional spacetime torus portal need frequency?
1014 Hz
How do you wire Voice coil?
Unless you are an electrician, I would not attempt it, you will need a special tool do wrap it around the axle (The post in which the voice coil moves up and down on). Either have a tech do it for you, or replace the speaker.
How many channels do you need to power my subwoofer?
mono or two channel are the best for subs but it depends on if your sub is dual voice coil or single voice coil, what ohm load the amp can handle, and if it is single voice coil and are using one sub you need to make sure you can bridge a 2-channel amp if that's the kind you chose... Next question you ask it may help to add a bit more detail. If I knew the sub brand and model, ohms, and if it's dual or single voice coil i could help answer that much better.
What is the role of series combination of starting winding and running winding in an electric fan?
In a motor such electric fan it needs magnetic field to operate if a coil is being energized it creates magnetism. How many speed does your electric fan has? usually it has 3 speeds so it need 3 windings and 1 for the magnetic field therefore there are 4 windings the Running winding, Starting winding, Auxiliaries.
Does paint varnish protect paintings from UV rays?
You need a Varnish with UV inhibitors.
How do you wire amp to 1 ohm load?
need more info but I'll give it a shot and hope i answer your question. You will need one of the following to get your desired ohm load: 1- single voice coil at 1 ohms 2 - single voice coil at 2 ohms wired + to +, - to - 2 - dual voice coil at 4 ohm all wired + to +, - to - so that you only have 2 wires conected to the amp. hope this helps.
Can you replace a dual voice coil speaker with a single coil and how do you wire it?
If you are going to replace a dual with a single you need to look up bridging it would be some thing like "{Right +}{Left -}
Why does a speaker need an electromagnet not a permanent magnet?
One of the main kinds of speakers needs both. Sound in the form of varying electricity is fed through part of the speaker known as the 'voice coil' which is actually just an electromagnet. Since the electricity in it is varying the magnetism produced by this coil varies too. The voice coil is placed close to a permanent magnet and the voice coil is permitted to move back and forth in response to the electricity going through it. A big cone is fastened to the voice coil to transmit the movements of the voice coil to the air more efficiently. Thus overall the permanent magnet and the electromagnet work together to produce the sound waves that we hear from a speaker. For a more detailed explanation go to the How Stuff Works web site and search for speaker.
You get fire to the coil pack but not to the spark plug?
Ignition Coils and "Coil Packs"Vehicle ignition coils and coil packs are nothing more than transformers that take the vehicle battery voltage [usually 12 Volts DC (direct current)] and convert it to very high voltage to create a hot spark at the spark plug gap.Vehicle ignition transformers are composed of two coils of wire. One coil is called the "primary" winding and is where electrical current is put into the coil. The second coil winding is called the "secondary," and when the flow of electrical current established in the primary winding is turned off, then a current is INDUCED in the secondary winding causing a tremendous increase in voltage at the secondary coil's output to the spark plug.IF, and I emphasize IF, you are getting electrical current TO the coil pack and yet NO output from the pack, then the pack is defective.This is usually caused by a broken or burned through wire in one of the two [the primary or secondary] coil windings.I have never heard of anyone successfully "rebuilding" an ignition coil so this means the coil must be replaced. However, before spending the money to replace an ignition coil, I strongly suggest that you make sure that the coil is being supplied with the proper voltage and signal pulse.There is nothing I hate worse than spending the money and time to replace a component to only discover later that the replacement did not solve the problem, and thus meaning that the replaced component was probably good and did not need replacement!!!!!
How do you use varnish in a sentence?
Varnish is a product for applying a protective coating to woods etc so... I need to Varnish my new bookcase.
How do you remove wood varnish from exposed wall bricks?
You'll need to use some lacquer thinner and a wire brush to remove any varnish on brick.
