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In an electromagnet what are the springy pieces of metal or carbon that make contact with the commutator's contacts?
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∙ 10y ago
Brushes
Wiki User
∙ 10y ago
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In an electromagnet what are the springy pieces of metal or carbon that make contact with the commutators contacts?
brushes
What is the bearing of a pendulum?
The bearing on a clock pendulum is usually two knife edges with a cross piece balanced upon it supporting the pendulum. Sometimes on cheaper clocks a very thin strip of springy steel is used.
Name the best conducter of electricity?
The answer to this question depends very much on what you want to do - and how much money you want to spend to do it !Copper is very good as a conductor (of both electricity and heat) and is not as expensive as silver or gold. However copper oxidizes and tarnishes badly if it is exposed to air and/or water and it also very easily "pits" - meaning it burns away, leaving holes and craters - if any sparks or electric arcs are caused to form on its surface. That means pure copper is no good for use to make contacts for electrical switches.Silver is perhaps the best conductor of electricity but it is expensive and oxidizes and tarnishes if exposed to air, and/or water, and "pits" if any sparks or electric arcs are caused to form on its surface. So, like copper, pure silver is no good for use to make contacts for electrical switches. However silver can be used to make very good contacts in electrical connectors and, if it is alloyed with other metals, good switch contacts .Gold is a very good conductor. Its main benefit is that it does not oxidize or tarnish if exposed to air and/or water, so it is often used to make the contacts in electrical connectors and, if it is alloyed with other metals, good contacts in electrical switches .The main disadvantage of using gold either for wires or for switch contacts is that it is in such great demand worldwide for many other uses (including jewellery) that it is very expensive.Because gold is such a good conductor - and is very soft and malleable, and easy to bond to other materials - it is often used as a very thin gold plating on top of cheaper and more rigid, springy metals or metal alloys (such as hardened brass) to make contacts in electrical connectors and switches.Because it can be made into extremely thin wires which don't break easily and have very low resistance to the flow of electric current, gold is also used to make the connections between the connection pads on the chips inside integrated circuit modules and their external connecting pins.Another opinionThere are numerous materials classed as superconductorsbecause of their property of zero electric resistance, such as bismuth-strontium-calcium-copper-oxides and yttrium-barium-copper-oxide; any of them could be considered the "best" conductor.I would guess it is probably one of the rare earth metals, but they are too rare and expensive to actually be used for that purpose.We use copper because it is a good compromize: good enough conductor and inexpensive. Silver is a better conductor but too expensive. Aluminum is a good conductor and inexpensive, but its oxide is an insulator and has been known to cause house fires. Gold is not quite as good a conductor as copper, is more expensive than silver, but does not oxidize.
What is the only thing that changes in a change of state?
That is really hard to answer... There is no ONE thing that changes when a change of state occurs because one thing leads to another... If I had to give one answer, I'd have to say energy changes. When a atom or molecule changes state, it can gain energy (liquid to gas or solid to liquid for example) and the bonds are stressed (more of a springy effect) between the protons to electrons as well as covalent and ionic bonds. So the stability decreases while the size of the element or compound increases. A good example of this is leaving a water bottle outside in the sun. The sun adds energy to the water, making it turn into a gas, the gas increases the pressure inside the bottle, thus making the bottle expand. *If you think about frozen water expanding the bottle it will trip you up. Water is special in that it expands when it freezes as well. I can't think of a common example for expansion right now other than water.* The electrons/ "vibrations" of the atoms also increase in speed. When they lose energy (gas to liquid, liquid to solid), the size decreases as does the speed of the electrons/ vibrations. Hence why absolute zero has no electron movement at all. Generally this also strengthens the bonds of the compounds because the bonds are not as stressed. They are more stable. So, simple one word answer? Energy.
What are the springy pieces of metal or carbon that make contact with the commutators contacts in an electromagnet?
brushes
In an electromagnet what are the springy pieces of metal or carbon that makes contact with the commutators contacts?
brushes
In an electromagnet what are the springy pieces of metal or carbon that make contact with the commutators contacts?
brushes
In an electromagnet what are the springy piece of metal or carbon that make contact with the commutators contact?
brushes
What are the springy pieces of metal or carbon that make contact with the commutator's contacts?
It's a small block of graphite. The graphite acts as both the electrical contact to the commutator and as a lubricant to reduce drag and wear.
Where do you get springy shoes on fantage?
If you have the limited pet Springy you can go to the pet locked items and click springy then you can obtain the shoes.
What type of cartilage is the most springy?
Elastic cartilage is the most 'springy' its not very common in the human body except the ears.
How do you get springy poles on poptropica?
you dont
What are the characteristics of a yo-yo?
springy
What rhymes with stringy?
Springy Thingy Dinghy
Can hard things be springy too?
Yes.
Can hard things can be springy too?
Yes.
